insufficient

The police forces are understaffed, insufficiently trained, and ill-equipped.

Du Sellier did not get very far, as the weather was very cold and he was insufficiently prepared.

On the whole it must be concluded that the theory is insufficiently supported by the evidence.

It was the story of brave men bravely led but insufficiently equipped.

His work is ingenious, learned, and suggestive, but in his day the facts of ancient mythology were insufficiently known.

I know that I lounged about the streets, insufficiently and unsatisfactorily fed.