Trenchant

Adjective

Definition: Forceful and effective in expression or style; incisive.

Synonyms: Biting, Cutting, Sharp, Penetrating, Insightful

Antonyms: Mild, Vague, Muddled, Weak

Examples:

The critic's trenchant review exposed every flaw in the play.
She made a trenchant argument that convinced everyone in the room.

Mnemonics:

Think of a sharp, cutting tool that can pierce through something easily.

Etymology:

Origin:

Middle English from Old French 'trenchant', based on Latin 'truncare' (to cut off)

Historical Usage:

The word 'trenchant' has been used since the 14th century with the same meaning of "cutting or biting." Its usage has remained relatively consistent over time.