assure

In a sentence

• Je m'assure que tout est en ordre avant de partir.

  I make sure everything is in order before leaving.

  Here, "m'assure" means "I make sure," which reflects the reflexive verb "s'assurer" used to express checking or verifying something oneself.

• Cette serrure assure une sécurité optimale.

  This lock ensures optimal security.

  Here, "assure" as a third person singular conjugation of "assurer" means "ensures," used to guarantee or provide fulfillment of something.

• Il m'assure qu'il viendra demain.

  He assures me that he will come tomorrow.

  Here, "m'assure" indicates that he is reassuring or promising to me that he will come tomorrow, illustrating assurance or guarantee.