deficient

1. Inadequate in amount or degree (synset 300052252)
   "a deficient education"; "deficient in common sense"; "lacking in stamina"; "tested and found wanting"
   similar to: inadequate, unequal - lacking the requisite qualities or resources to meet a task
   same as: lacking, wanting
2. Of a quantity not able to fulfill a need or requirement (synset 302344427)
   "insufficient funds"
   also: meager, meagerly, meagre, scrimpy, stingy - deficient in amount or quality or extent
   tells us about: quantity - an adequate or large amount
   similar to:

   • depleted, low - no longer sufficient
   • inadequate, jejune, poor, short - of insufficient quantity to meet a need
   • lean, skimpy - containing little excess
   • light, scant, short - less than the correct or legal or full amount often deliberately so
   • shy - short
   same as: insufficient
3. Falling short of some prescribed norm (synset 302305084)
   "substandard housing"
   similar to: nonstandard - varying from or not adhering to a standard
   same as: inferior, substandard

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