Definitions

1. adjective

guilty of or inclined to sin; immoral or wicked.

“The sinful actions of the corporation led to a public outcry.”

2. noun

a sinful or immoral act or behavior.

“The priest warned the congregation about the dangers of sinful desires.”

3. adverb

in a sinful or immoral manner.

“She lived a sinful life, indulging in every pleasure without restraint.”