Collocations for inadequate - adj.

appear, be, look, prove, seem
become
remain
consider sth, find sth, judge sth, regard sth as, think sth (esp. BrE)
These precautions have been judged inadequate.

deeply, grossly, hopelessly, pitifully, seriously, woefully
His salary was pitifully inadequate for the needs of his growing family.

completely, entirely, quite (esp. BrE), totally, utterly, wholly (esp. BrE)
simply
increasingly
clearly, manifestly (esp. BrE), obviously
notoriously

at
People, despite their intelligence, are curiously inadequate at communicating with horses.

for
This computer is clearly inadequate for my needs.

be, feel, seem
I felt dreadfully inadequate.

extremely, fairly, very, etc.
I suddenly felt extremely inadequate as I compared myself to him.

deeply, hopelessly
totally, wholly (esp. BrE)
generally
sexually

to
The helicopters are inadequate to the demands of modern combat.
She was inadequate to the demands of the job.

Inadequate is used with these nouns:
accommodation, evidence, explanation, facility, funding, housing, investment, nutrition, pension, preparation, record, reflection, response, safeguard, sanitation, service, supervision, supply, training, ventilation, wage