suffisant

In a sentence

• Ces preuves sont-elles suffisantes pour convaincre le jury ?

  Are these pieces of evidence sufficient to convince the jury?

  'Suffisante' is used here as an adjective to describe something (the proofs) being adequate or enough to satisfy a certain need.

• Il est tellement suffisant qu'il ne demande jamais d'aide.

  He is so self-satisfied that he never asks for help.

  'Suffisant' is employed here to describe a character trait, meaning self-centered or conceited.

• J'ai étudié pour trois heures, ce qui est suffisant pour cet examen.

  I studied for three hours, which is sufficient for this test.

  'Suffisant' is used to express that the amount of studying is adequate or enough for the occasion.