This is the 3084th most frequent French word.
oublie
"Forget" or "neglect."
Here, 'oublie' is used in its imperative form to command someone not to forget something.
N'oublie pas de fermer la porte.
Don't forget to close the door.
In this sentence, 'oublié' is the past participle of 'oublier', used to indicate that someone forgot an action in the past.
J'ai oublié de lui faire un cadeau.
I forgot to give him a present.
Here, 'oublie' is in the present tense and indicates a habit or repeated action of forgetting something.