The definition for impenitent is "Lacking remorse." Used in a sentence: The impenitent criminal received a harsh penalty, but his remorseful accomplice was released. The definition for heinous is "shockingly evil.", the definition for promote is "To contribute to the growth or prosperity of.", and the definition for negate is "To make invalid."

The definition for opportune is "Suitable or convenient." Used in a sentence: Quan stepped onto the platform at the most opportune time, just as the train pulled in. The definition for combative is "eager to fight.", the definition for unscrupulous is "Lacking principles.", and the definition for extenuating is "Partially excusing."

The definition for derivative is "Lacking originality." Used in a sentence: Critics panned the movie as a derivative version of last year's Best Picture. The definition for duplicity is "deceptive thought, speech, or action.", the definition for camaraderie is "Spirit of friendship.", and the definition for repentant is "Feeling regret."

The definition for servile is "Fearfully submissive." Used in a sentence: Felicia's servile attitude annoyed her boss, who preferred an assistant with more backbone. The definition for pathos is "sympathetic pity.", the definition for exasperation is "The state of being irritated.", and the definition for aerate is "To supply with air."

The definition for ploy is "A contrived plan." Used in a sentence: Sarah thought George's ploy of borrowing her notes was a cowardly way to ask her out. The definition for drub is "to defeat decisively.", the definition for stern is "Harsh, severe.", and the definition for fragile is "Delicate."