diff --git a/pwgen_fr/word_db.py b/pwgen_fr/word_db.py
index 3435997..e8e7e48 100644
--- a/pwgen_fr/word_db.py
+++ b/pwgen_fr/word_db.py
@@ -36,6 +36,15 @@ class Nom(t.NamedTuple):
         """Accorde en nombre"""
         return getattr(self, nombre.name.lower())
 
+    @property
+    def serialized(self):
+        return {"genre": self.genre.name, "sing": self.sing, "plur": self.plur}
+
+    @classmethod
+    def unserialized(cls, **kwargs):
+        genre = Genre(kwargs.pop("genre"))
+        return cls(**kwargs, genre=genre)
+
 
 class Adjectif(t.NamedTuple):
     masc_sing: str
@@ -50,6 +59,14 @@ class Adjectif(t.NamedTuple):
         """Accorde en genre et en nombre"""
         return getattr(self, f"{genre.name.lower()}_{nombre.name.lower()}")
 
+    @property
+    def serialized(self):
+        return self._asdict()
+
+    @classmethod
+    def unserialized(cls, **kwargs):
+        return cls(**kwargs)
+
 
 class Verbe(t.NamedTuple):
     present_sing: str
@@ -66,6 +83,14 @@ class Verbe(t.NamedTuple):
         """Accorde en temps et en nombre (seule la 3è pers. est utilisée)"""
         return getattr(self, f"{temps.name.lower()}_{nombre.name.lower()}")
 
+    @property
+    def serialized(self):
+        return self._asdict()
+
+    @classmethod
+    def unserialized(cls, **kwargs):
+        return cls(**kwargs)
+
 
 class Adverbe(t.NamedTuple):
     """Packed as named tuple for consistence"""
@@ -79,6 +104,14 @@ class Adverbe(t.NamedTuple):
         """for consistence"""
         return self.adv
 
+    @property
+    def serialized(self):
+        return self._asdict()
+
+    @classmethod
+    def unserialized(cls, **kwargs):
+        return cls(**kwargs)
+
 
 class WordDb:
     """Base de donnée de mots, sérialisable"""
@@ -117,7 +150,7 @@ class WordDb:
     def serialize(self) -> dict:
         """Serialize to plain dictionary (no classes)"""
         return {
-            attr: [x._asdict() for x in getattr(self, attr)]
+            attr: [x.serialized for x in getattr(self, attr)]
             for attr in self.__class__._serialize_data
         }
 
@@ -131,7 +164,7 @@ class WordDb:
         """Reverses :serialize:"""
         parsed = {}
         for attr, attr_cls in cls._serialize_data.items():
-            parsed[attr] = list(map(attr_cls, data[attr]))
+            parsed[attr] = list(map(attr_cls.unserialized, data[attr]))
         return cls(**parsed)
 
     @classmethod