If you have a sufficient amount of something, it's enough — not too much, not too little, just right. Goldilocks would be pleased.

Sufficient comes from a Latin verb meaning "to meet the need." If something is sufficient it has met, or satisfied, a need. Enough is often used as a synonym for sufficient, and when something is not sufficient, it is too little to take care of what's needed. Sufficient can, however, also suggest just enough and not an abundance, as in "the money was sufficient for groceries, but we needed more to fill the gas tank."

Definitions of sufficient

adj of a quantity that can fulfill a need or requirement but without being abundant

sufficient food”
more than enough in size or scope or capacity
adequate, decent, enough
sufficient for the purpose
sufficient to provide comfort
deficient, insufficient
of a quantity not able to fulfill a need or requirement
meager, meagerly, meagre, scrimpy, stingy
deficient in amount or quality or extent
depleted, low
no longer sufficient
inadequate, poor, short
not sufficient to meet a need
lean, skimpy
containing little excess
light, scant, short
less than the correct or legal or full amount often deliberately so
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