"inadequate" in the adjective sense
1. inadequate, unequal
lacking the requisite qualities or resources to meet a task
"inadequate training"
"the staff was inadequate"
"she was unequal to the task"
2. inadequate, poor, short, jejune
of insufficient quantity to meet a need
"an inadequate income"
"a poor salary"
"money is short"
"on short rations"
"food is in short supply"
"short on experience"
"the jejune diets of the very poor"
Source: WordNet® (An amazing lexical database of English)
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