SINFUL

extraordinary, over-the-top, sinful

(adjective) far more than usual or expected; “an extraordinary desire for approval”; “it was an over-the-top experience”

sinful, unholy, wicked

(adjective) having committed unrighteous acts; “a sinful person”

iniquitous, sinful, ungodly

(adjective) characterized by iniquity; wicked because it is believed to be a sin; “iniquitous deeds”; “he said it was sinful to wear lipstick”; “ungodly acts”

Source: WordNet® 3.1

Etymology

Adjective

sinful (comparative more sinful, superlative most sinful)

constituting a sin; being morally or religiously wrong; wicked; evil

Antonym: sinless

(colloquial) decadent (luxuriously self-indulgent)

Source: Wiktionary

Sin"ful, a. Etym: [AAS. synfull.]

Definition: 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.

– Sin"ful*ly, adv.

– Sin"ful*ness, n.

Source: Webster’s Unabridged Dictionary 1913 Edition