3 adjectives to describe beseeching

From the lawns and barren garden, from the ugly terraces themselves, it rose into the night, and behind it came a curious driving sound, incomplete, unfinished, as of wailing for deliverance, the wailing of desperate souls in anguish, the dull and dry beseeching of hopeless spirits in prison.

must we ask in vain, In vain beseech and win no answering word, Save mocking echoes of our lonely pain From lonely hill and bird?

For, He has said, "Yet if thou wilt arise early to God and wilt beseech the Almighty...

3 adjectives to describe  beseeching