not good enough or too low in quality:
woefully inadequate This work is woefully (= extremely) inadequate - you'll have to do it again.
too small in amount:
She rejected the $2 million offer as totally inadequate.
not confident enough to deal with a situation:
Maddie's a real expert on art, so I feel completely inadequate whenever I talk to her about it.
too low in quality or too small in amount; not enough:
an inadequate income/offer
I feel inadequate when I talk to Miranda about art because she knows so much.
too small in amount:
inadequate funds/incomes/pensions Too many of us are retiring on hopelessly inadequate incomes.
too low in quality:
The report says that long-range spending plans are "inadequate".
inadequate controls/monitoring/oversight