Synonyms for Not enough:

• adj.

  •deficient (adjective)
  • insufficient,
  • scarce,
  • rare,
  • scant,
  • second string,
  • unequal,
  • impaired,
  • sketchy,
  • rarest,
  • short,
  • not cut out for,
  • defective,
  • injured,
  • scanty,
  • wanting,
  • not make it,
  • incomplete,
  • marred,
  • shy,
  • exiguous,
  • unfinished,
  • flawed,
  • damaged,
  • skimpy,
  • outta gas,
  • not up to scratch,
  • weak,
  • second fiddle,
  • amiss,
  • meager,
  • unassembled,
  • faulty,
  • found wanting,
  • infrequent,
  • third string,
  • bad,
  • unsatisfactory,
  • inferior,
  • lacking.
  •undermanned (adjective)
  • shorthanded.

• n.

  •drop in the bucket (noun)
  • small change,
  • lick and a promise,
  • bit,
  • disappointment,
  • small potatoes,
  • trifle,
  • band-aid,
  • pittance,
  • speck.

• Other synonyms:

  •adj.
  • impotent,
  • incapable,
  • inconsiderable,
  • junker,
  • lemon,
  • minus,
  • too little,
  • deficient,
  • inadequate,
  • niggardly,
  • undermanned.
  •adv
  • perfunctorily,
  • scantily,
  • deficiently.
  •n.
  • band aid,
  • drop in the bucket,
  • drop in the ocean,
  • small amounts,
  • small quantity,
  • too little too late,
  • cosmetic measure,
  • miniscule amount,
  • small amount,
  • spit in the sea,
  • trivial amount.

Antonyms for Not enough:

• adj.

  • deficient
    excessive, faultless, abundant, enough, sufficient, satisfactory, adequate, perfect, strong, superfluous, flawless, ample.
  • inadequate
    finished, capable, complete, potent, full, competent, able.