Webster's Revised Unabridged Dictionary · 1913

Sinful

Sinful , adjective

[AAS. synfull.]

Tainted with, or full of, sin; wicked; iniquitous; criminal; unholy; as, sinful men; sinful thoughts. — Piers Plowman
Ah sinful nation, a people laden with iniquity. — Isa. i. 4