diff --git a/ecs.hpp b/ecs.hpp
index 08853c9..7acf1ef 100644
--- a/ecs.hpp
+++ b/ecs.hpp
@@ -667,11 +667,14 @@ namespace ecs_hpp
 {
     class entity final {
     public:
+        entity(registry& owner) noexcept;
+        entity(registry& owner, entity_id id) noexcept;
+
         entity(const entity&) = default;
         entity& operator=(const entity&) = default;
 
-        entity(registry& owner) noexcept;
-        entity(registry& owner, entity_id id) noexcept;
+        entity(entity&&) noexcept = default;
+        entity& operator=(entity&&) noexcept = default;
 
         registry& owner() noexcept;
         const registry& owner() const noexcept;
@@ -751,14 +754,17 @@ namespace ecs_hpp
 {
     class const_entity final {
     public:
-        const_entity(const const_entity&) = default;
-        const_entity& operator=(const const_entity&) = default;
-
         const_entity(const entity& ent) noexcept;
 
         const_entity(const registry& owner) noexcept;
         const_entity(const registry& owner, entity_id id) noexcept;
 
+        const_entity(const const_entity&) = default;
+        const_entity& operator=(const const_entity&) = default;
+
+        const_entity(const_entity&&) noexcept = default;
+        const_entity& operator=(const_entity&&) noexcept = default;
+
         const registry& owner() const noexcept;
         entity_id id() const noexcept;
 
@@ -817,10 +823,13 @@ namespace ecs_hpp
     template < typename T >
     class component final {
     public:
+        component(const entity& owner) noexcept;
+
         component(const component&) = default;
         component& operator=(const component&) = default;
 
-        component(const entity& owner) noexcept;
+        component(component&&) noexcept = default;
+        component& operator=(component&&) noexcept = default;
 
         entity& owner() noexcept;
         const entity& owner() const noexcept;
@@ -877,11 +886,14 @@ namespace ecs_hpp
     template < typename T >
     class const_component final {
     public:
+        const_component(const component<T>& comp) noexcept;
+        const_component(const const_entity& owner) noexcept;
+
         const_component(const const_component&) = default;
         const_component& operator=(const const_component&) = default;
 
-        const_component(const component<T>& comp) noexcept;
-        const_component(const const_entity& owner) noexcept;
+        const_component(const_component&&) noexcept = default;
+        const_component& operator=(const_component&&) noexcept = default;
 
         const const_entity& owner() const noexcept;
 
@@ -989,6 +1001,12 @@ namespace ecs_hpp
         registry() = default;
         ~registry() noexcept = default;
 
+        registry(const registry& other) = delete;
+        registry& operator=(const registry& other) = delete;
+
+        registry(registry&& other) noexcept = default;
+        registry& operator=(registry&& other) noexcept = default;
+
         entity wrap_entity(const const_uentity& ent) noexcept;
         const_entity wrap_entity(const const_uentity& ent) const noexcept;