Webster's Revised Unabridged Dictionary · 1913

Needful

Needful (nēd"ful) , adjective

1.
Full of need; in need or want; needy; distressing. [Archaic] — Chaucer
The needful time of trouble. — Bk. of Com. Prayer
2.
Necessary for supply or relief; requisite.
All things needful for defense abound. — Dryden