insufficient · lacking · deficiency · not enough · inadequate · not worth · cannot · should not

When his food supply ran short, he had to look for a new place to live.

What with fatigue and lack of sleep, he has fallen ill at last.

That place's food is great, and their prices are good, but the fly in the ointment is their terrible location.

I haven't been getting enough sleep lately.

His proposal is not worth talking about.