Suffices

Suffices is the third-person singular present tense form of the verb suffice, meaning to be adequate or satisfactory to meet a purpose. It is used to indicate that something is enough for a stated need, without specifying the exact amount. The phrase "that should suffice" is common in both spoken and written English. "It suffices" or "the evidence suffices" can appear in formal or academic contexts when a condition is met or no further action is required.

Related forms include sufficed (past tense and past participle), sufficing (present participle), and sufficiency (the noun form referring to the state of being sufficient). The adjective form is sufficient, and its adverbial form is sufficiently.

Etymology: suffice comes from Latin sufficere "to be enough," and entered English via Old French suffire. The use of suffices is therefore tied to the sense of providing enough justification or support for a given objective.

Usage notes: suffices is more common in formal registers and prose; in everyday speech, speakers may prefer "is enough" or "will be enough." The conventional idiom "suffice it to say" signals that details are omitted because they are unnecessary to the main point.

In summary, suffices is a verb form that asserts adequacy or sufficiency in relation to a task, need, or requirement, with the related adjectives and nouns forming a broader semantic family around the concept of being enough.