suf·fice / səˈfīs/ • v. [intr.] be enough or adequate: a quick look should suffice| two examples should suffice to prove the contention. ∎ [tr.] meet the needs of: simple mediocrity cannot suffice them.PHRASES: suffice (it) to say used to indicate that one is saying enough to make one's meaning clear while withholding something for reasons of discretion or brevity: suffice it to say that they were not considered suitable for this project.