sufficient(a = adj.all) - of a quantity that can fulfill a need or requirement but without being abundant; "sufficient food"
Antonym: insufficient
Derived forms verb suffice₁, noun sufficiency₃, noun sufficiency₂

1.  Equal to the end proposed; adequate to wants; enough; ample; competent; as, provision sufficient for the family; an army sufficient to defend the country. [1913 Webster]
"My grace is sufficient for thee." [1913 Webster]

2.  Possessing adequate talents or accomplishments; of competent power or ability; qualified; fit. [1913 Webster]
"Who is sufficient for these things?" [1913 Webster]

3.  Capable of meeting obligations; responsible. [1913 Webster]
"The man is, notwithstanding, sufficient . . . I think I may take his bond." [1913 Webster]

4.  Self-sufficient; self-satisfied; content. [1913 Webster]
"Thou art the most sufficient (I'll say for thee),
Not to believe a thing." [1913 Webster]

sufficient, adj.
1 sufficing, adequate, enough (is sufficient for a family; didn't have sufficient funds).
2 = SELF-SUFFICIENT.
3 archaic competent; of adequate ability, resources, etc.

Derivative:
sufficiently adv.

Etymology:
ME f. OF sufficient or L sufficiens (as SUFFICE)

VB  be sufficient, suffice, do, just do, satisfy, pass muster, have enough, eat, one's fill, drink one's fill, have one's fill, roll in, swim in, wallow in, wanton, abound, exuberate, teem, flow, stream, rain, shower down, pour, pour in, swarm, bristle with, superabound, render sufficient, replenish, Adj, sufficient, enough, adequate, up to the mark, commensurate, competent, satisfactory, valid, tangible, measured, moderate, full, ample, plenty, plentiful, plenteous, plenty as blackberries, copious, abundant, abounding, replete, enough and to spare, flush, choke-full, chock-full, well-stocked, well- provided, liberal, unstinted, unstinting, stintless, without stint, unsparing, unmeasured, lavish, wholesale, rich, luxuriant, affluent, wantless, big with, unexhausted, unwasted, exhaustless, inexhaustible, Adv, sufficiently, amply.

N  sufficiency, adequacy, enough, withal, satisfaction, competence, no less, quantum sufficit, Q, S, mediocrity, fill, fullness, plenitude, plenty, abundance, copiousness, amplitude, galore, lots, profusion, full measure, good measure pressed down and running, over, luxuriance, affluence, fat of the land, a land flowing with milk and honey, cornucopia, horn of plenty, horn of Amalthaea, mine, outpouring, flood, tide, repletion, satiety, sufficient, enough, adequate, up to the mark, commensurate, competent, satisfactory, valid, tangible, measured, moderate, full, ample, plenty, plentiful, plenteous, plenty as blackberries, copious, abundant, abounding, replete, enough and to spare, flush, choke-full, chock-full, well-stocked, well- provided, liberal, unstinted, unstinting, stintless, without stint, unsparing, unmeasured, lavish, wholesale, rich, luxuriant, affluent, wantless, big with, unexhausted, unwasted, exhaustless, inexhaustible, sufficiently, amply Adj, full, in abundance, with no sparing hand, to one's heart's content, ad libitum, without stint, cut and come again, das Beste ist gut genug.