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.
  •inadequate (adjective)
  • inapt,
  • junk,
  • glitch,
  • lousy,
  • miserly,
  • lame,
  • unqualified,
  • Stinted,
  • stunted,
  • incompetent,
  • bare,
  • unproductive,
  • sterile,
  • poor,
  • low,
  • barren,
  • sparse,
  • small,
  • insubstantial,
  • spare,
  • incommensurate,
  • dry,
  • thin,
  • imperfect,
  • parsimonious,
  • bush-league,
  • depleted,
  • inappreciable,
  • feeble,
  • failing.
  •undermanned (adjective)
  • shorthanded.

• adv.

  •inadequately (adverb)
  • ineffectively,
  • inefficiently,
  • partially,
  • ineptly,
  • incompletely,
  • badly,
  • partly,
  • ineffectually,
  • incompetently,
  • meagerly.
  •insufficiently (adverb)
  • inadequately.

• n.

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

• Other synonyms:

  •Other relevant words:
  • meagre,
  • barely any,
  • disappointing,
  • hardly any,
  • unsuitable,
  • unsatisfying,
  • little,
  • unequal to.

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.