diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index 2ffae1e8..26a02931 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -128,7 +128,7 @@ $ clang-uml --add-compile-flag -Wno-implicit-const-int-float-conversion \
 Please note that if your `compile_commands.json` already contains - for instance
 `-Wshadow` - then you also have to remove it, i.e.:
 
-```
+```yaml
 add_compile_flags:
   - -Wno-implicit-const-int-float-conversion
   - -Wno-shadow
diff --git a/src/class_diagram/generators/json/class_diagram_generator.cc b/src/class_diagram/generators/json/class_diagram_generator.cc
index c900e67e..73c19aa1 100644
--- a/src/class_diagram/generators/json/class_diagram_generator.cc
+++ b/src/class_diagram/generators/json/class_diagram_generator.cc
@@ -54,12 +54,19 @@ void to_json(nlohmann::json &j, const class_method &c)
 {
     j = dynamic_cast<const class_element &>(c);
 
-    j["is_static"] = c.is_static();
-    j["is_const"] = c.is_const();
-    j["is_defaulted"] = c.is_defaulted();
     j["is_pure_virtual"] = c.is_pure_virtual();
     j["is_virtual"] = c.is_virtual();
-    j["is_implicit"] = c.is_implicit();
+    j["is_const"] = c.is_const();
+    j["is_defaulted"] = c.is_defaulted();
+    j["is_deleted"] = c.is_deleted();
+    j["is_static"] = c.is_static();
+    j["is_noexcept"] = c.is_noexcept();
+    j["is_constexpr"] = c.is_constexpr();
+    j["is_consteval"] = c.is_consteval();
+    j["is_constructor"] = c.is_constructor();
+    j["is_move_assignment"] = c.is_move_assignment();
+    j["is_copy_assignment"] = c.is_copy_assignment();
+    j["is_operator"] = c.is_operator();
 
     j["parameters"] = c.parameters();
 }
diff --git a/src/class_diagram/generators/plantuml/class_diagram_generator.cc b/src/class_diagram/generators/plantuml/class_diagram_generator.cc
index 59f831b5..929a06fc 100644
--- a/src/class_diagram/generators/plantuml/class_diagram_generator.cc
+++ b/src/class_diagram/generators/plantuml/class_diagram_generator.cc
@@ -189,9 +189,17 @@ void generator::generate(const class_ &c, std::ostream &ostr) const
         }
         ostr << ")";
 
+        if (m.is_constexpr())
+            ostr << " constexpr";
+        else if (m.is_consteval())
+            ostr << " consteval";
+
         if (m.is_const())
             ostr << " const";
 
+        if (m.is_noexcept())
+            ostr << " noexcept";
+
         assert(!(m.is_pure_virtual() && m.is_defaulted()));
 
         if (m.is_pure_virtual())
@@ -199,6 +207,8 @@ void generator::generate(const class_ &c, std::ostream &ostr) const
 
         if (m.is_defaulted())
             ostr << " = default";
+        else if (m.is_deleted())
+            ostr << " = deleted";
 
         ostr << " : " << type;
 
diff --git a/src/class_diagram/model/class_method.cc b/src/class_diagram/model/class_method.cc
index 3a3e5868..0044026c 100644
--- a/src/class_diagram/model/class_method.cc
+++ b/src/class_diagram/model/class_method.cc
@@ -48,10 +48,57 @@ void class_method::is_defaulted(bool is_defaulted)
     is_defaulted_ = is_defaulted;
 }
 
+bool class_method::is_deleted() const { return is_deleted_; }
+
+void class_method::is_deleted(bool is_deleted) { is_deleted_ = is_deleted; }
+
 bool class_method::is_static() const { return is_static_; }
 
 void class_method::is_static(bool is_static) { is_static_ = is_static; }
 
+bool class_method::is_constexpr() const { return is_constexpr_; }
+
+void class_method::is_constexpr(bool is_constexpr)
+{
+    is_constexpr_ = is_constexpr;
+}
+
+bool class_method::is_consteval() const { return is_consteval_; }
+
+void class_method::is_consteval(bool is_consteval)
+{
+    is_consteval_ = is_consteval;
+}
+
+bool class_method::is_noexcept() const { return is_noexcept_; }
+
+void class_method::is_noexcept(bool is_noexcept) { is_noexcept_ = is_noexcept; }
+
+bool class_method::is_constructor() const { return is_constructor_; }
+
+void class_method::is_constructor(bool is_constructor)
+{
+    is_constructor_ = is_constructor;
+}
+
+bool class_method::is_move_assignment() const { return is_move_assignment_; }
+
+void class_method::is_move_assignment(bool is_move_assignment)
+{
+    is_move_assignment_ = is_move_assignment;
+}
+
+bool class_method::is_copy_assignment() const { return is_copy_assignment_; }
+
+void class_method::is_copy_assignment(bool is_copy_assignment)
+{
+    is_copy_assignment_ = is_copy_assignment;
+}
+
+bool class_method::is_operator() const { return is_operator_; }
+
+void class_method::is_operator(bool is_operator) { is_operator_ = is_operator; }
+
 const std::vector<method_parameter> &class_method::parameters() const
 {
     return parameters_;
diff --git a/src/class_diagram/model/class_method.h b/src/class_diagram/model/class_method.h
index 51a6d4c2..1e44aff0 100644
--- a/src/class_diagram/model/class_method.h
+++ b/src/class_diagram/model/class_method.h
@@ -48,9 +48,33 @@ public:
     bool is_defaulted() const;
     void is_defaulted(bool is_defaulted);
 
+    bool is_deleted() const;
+    void is_deleted(bool is_deleted);
+
     bool is_static() const;
     void is_static(bool is_static);
 
+    bool is_constexpr() const;
+    void is_constexpr(bool is_constexpr);
+
+    bool is_consteval() const;
+    void is_consteval(bool is_consteval);
+
+    bool is_noexcept() const;
+    void is_noexcept(bool is_noexcept);
+
+    bool is_constructor() const;
+    void is_constructor(bool is_constructor);
+
+    bool is_move_assignment() const;
+    void is_move_assignment(bool is_move_assignment);
+
+    bool is_copy_assignment() const;
+    void is_copy_assignment(bool is_copy_assignment);
+
+    bool is_operator() const;
+    void is_operator(bool is_operator);
+
     const std::vector<method_parameter> &parameters() const;
     void add_parameter(method_parameter &&parameter);
 
@@ -61,6 +85,14 @@ private:
     bool is_virtual_{false};
     bool is_const_{false};
     bool is_defaulted_{false};
+    bool is_deleted_{false};
     bool is_static_{false};
+    bool is_noexcept_{false};
+    bool is_constexpr_{false};
+    bool is_consteval_{false};
+    bool is_constructor_{false};
+    bool is_move_assignment_{false};
+    bool is_copy_assignment_{false};
+    bool is_operator_{false};
 };
 } // namespace clanguml::class_diagram::model
diff --git a/src/class_diagram/model/method_parameter.cc b/src/class_diagram/model/method_parameter.cc
index e6a66a60..95773cfc 100644
--- a/src/class_diagram/model/method_parameter.cc
+++ b/src/class_diagram/model/method_parameter.cc
@@ -55,8 +55,12 @@ std::string method_parameter::to_string(
     auto name_ns =
         using_namespace.relative(common::model::namespace_{name()}.to_string());
 
-    if (default_value().empty())
+    if (default_value().empty()) {
+        if (name_ns.empty())
+            return type_ns;
+
         return fmt::format("{} {}", type_ns, name_ns);
+    }
 
     return fmt::format("{} {} = {}", type_ns, name_ns, default_value());
 }
diff --git a/src/class_diagram/visitor/translation_unit_visitor.cc b/src/class_diagram/visitor/translation_unit_visitor.cc
index 348858c0..3e897a14 100644
--- a/src/class_diagram/visitor/translation_unit_visitor.cc
+++ b/src/class_diagram/visitor/translation_unit_visitor.cc
@@ -1283,11 +1283,21 @@ void translation_unit_visitor::process_method(
     class_method method{common::access_specifier_to_access_t(mf.getAccess()),
         util::trim(method_name), method_return_type};
 
+    const bool is_constructor = c.name() == method_name;
+
     method.is_pure_virtual(mf.isPure());
     method.is_virtual(mf.isVirtual());
     method.is_const(mf.isConst());
     method.is_defaulted(mf.isDefaulted());
+    method.is_deleted(mf.isDeleted());
     method.is_static(mf.isStatic());
+    method.is_operator(mf.isOverloadedOperator());
+    method.is_constexpr(mf.isConstexprSpecified() && !is_constructor);
+    method.is_consteval(mf.isConsteval());
+    method.is_constructor(is_constructor);
+    method.is_move_assignment(mf.isMoveAssignmentOperator());
+    method.is_copy_assignment(mf.isCopyAssignmentOperator());
+    method.is_noexcept(isNoexceptExceptionSpec(mf.getExceptionSpecType()));
 
     process_comment(mf, method);
 
diff --git a/tests/t00003/t00003.cc b/tests/t00003/t00003.cc
index d5656ce3..9aadcac1 100644
--- a/tests/t00003/t00003.cc
+++ b/tests/t00003/t00003.cc
@@ -12,7 +12,7 @@ public:
     {
     }
     A(A &&) = default;
-    A(const A &) = default;
+    A(const A &) = delete;
     virtual ~A() = default;
 
     void basic_method() { }
@@ -20,6 +20,17 @@ public:
     void const_method() const { }
     auto auto_method() { return 1; }
 
+    A &operator++()
+    {
+        private_member++;
+        return *this;
+    }
+
+    A &operator=(A &&other) noexcept { return *this; }
+    A &operator=(A &other) noexcept { return *this; }
+
+    constexpr std::size_t size() const { return private_member; }
+
     auto double_int(const int i) { return 2 * i; }
     auto sum(const double a, const double b) { return a_ + b_ + c_; }
 
diff --git a/tests/t00003/test_case.h b/tests/t00003/test_case.h
index 19b9615d..9d06bd2f 100644
--- a/tests/t00003/test_case.h
+++ b/tests/t00003/test_case.h
@@ -44,6 +44,10 @@ TEST_CASE("t00003", "[test-case][class]")
         REQUIRE_THAT(puml, !IsDependency(_A("A"), _A("A")));
 
         REQUIRE_THAT(puml, (IsMethod<Public, Default>("A")));
+        REQUIRE_THAT(puml, (IsMethod<Public, Default>("A", "void", "A &&")));
+        REQUIRE_THAT(
+            puml, (IsMethod<Public, Deleted>("A", "void", "const A &")));
+
         REQUIRE_THAT(puml, (IsMethod<Public, Default>("~A")));
 
         REQUIRE_THAT(puml, (IsMethod<Public>("basic_method")));
@@ -55,6 +59,9 @@ TEST_CASE("t00003", "[test-case][class]")
             (IsMethod<Public>("default_string", "std::string",
                 "int i, std::string s = \"abc\"")));
 
+        REQUIRE_THAT(
+            puml, (IsMethod<Public, Const, Constexpr>("size", "std::size_t")));
+
         REQUIRE_THAT(puml, (IsMethod<Protected>("protected_method")));
         REQUIRE_THAT(puml, (IsMethod<Private>("private_method")));
         REQUIRE_THAT(puml, (IsField<Public>("public_member", "int")));
diff --git a/tests/t00051/test_case.h b/tests/t00051/test_case.h
index 6471d7cd..a90f27b9 100644
--- a/tests/t00051/test_case.h
+++ b/tests/t00051/test_case.h
@@ -45,7 +45,7 @@ TEST_CASE("t00051", "[test-case][class]")
                 "Function && f, Args &&... args")));
         REQUIRE_THAT(puml,
             (IsMethod<Public>("thread", "void",
-                "(lambda at ../../tests/t00051/t00051.cc:59:27) && ")));
+                "(lambda at ../../tests/t00051/t00051.cc:59:27) &&")));
         REQUIRE_THAT(puml,
             (IsMethod<Private>("start_thread3",
                 "B<(lambda at ../../tests/t00051/t00051.cc:43:18),(lambda at "
diff --git a/tests/t00064/test_case.h b/tests/t00064/test_case.h
index 804a4f96..d10e290e 100644
--- a/tests/t00064/test_case.h
+++ b/tests/t00064/test_case.h
@@ -68,12 +68,14 @@ TEST_CASE("t00064", "[test-case][class]")
         REQUIRE_THAT(puml,
             (IsMethod<Public>("getp", "value_type const*", "unsigned int i")));
         REQUIRE_THAT(puml,
-            (IsMethod<Public>("find", "unsigned int", "value_type const& v")));
+            (IsMethod<Public, Constexpr>(
+                "find", "unsigned int", "value_type const& v")));
 #else
         REQUIRE_THAT(puml,
             (IsMethod<Public>("getp", "const value_type *", "unsigned int i")));
         REQUIRE_THAT(puml,
-            (IsMethod<Public>("find", "unsigned int", "const value_type & v")));
+            (IsMethod<Public, Constexpr>(
+                "find", "unsigned int", "const value_type & v")));
 
 #endif
         save_puml(
diff --git a/tests/test_cases.h b/tests/test_cases.h
index 4ebd5bdb..e3e0e5ae 100644
--- a/tests/test_cases.h
+++ b/tests/test_cases.h
@@ -103,8 +103,16 @@ struct Static { };
 
 struct Const { };
 
+struct Constexpr { };
+
+struct Consteval { };
+
+struct Noexcept { };
+
 struct Default { };
 
+struct Deleted { };
+
 struct HasCallWithResultMatcher : ContainsMatcher {
     HasCallWithResultMatcher(
         CasedString const &comparator, CasedString const &resultComparator)
@@ -530,6 +538,12 @@ ContainsMatcher IsMethod(std::string const &name,
 
     pattern += "(" + params + ")";
 
+    if constexpr (has_type<Constexpr, Ts...>())
+        pattern += " constexpr";
+
+    if constexpr (has_type<Consteval, Ts...>())
+        pattern += " consteval";
+
     if constexpr (has_type<Const, Ts...>())
         pattern += " const";
 
@@ -539,6 +553,9 @@ ContainsMatcher IsMethod(std::string const &name,
     if constexpr (has_type<Default, Ts...>())
         pattern += " = default";
 
+    if constexpr (has_type<Deleted, Ts...>())
+        pattern += " = deleted";
+
     pattern += " : " + type;
 
     return ContainsMatcher(CasedString(pattern, caseSensitivity));
diff --git a/tests/test_cases.yaml b/tests/test_cases.yaml
index 97734d89..a2360d57 100644
--- a/tests/test_cases.yaml
+++ b/tests/test_cases.yaml
@@ -4,7 +4,7 @@ test_cases:
       title: Basic class inheritance
       description:
     - name: t00003
-      title: Class field and methods
+      title: Class fields and methods
       description:
     - name: t00004
       title: Nested classes and enums