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 civility is "politeness.", the definition for stealth is "The act of moving secretly or unnoticed.", and the definition for redouble is "To make twice as great."

The definition for retroactive is "effective as of a prior time or condition." Used in a sentence: The retroactive law made even past infractions punishable. The definition for prune is "to reduce by removing excess.", the definition for camaraderie is "Spirit of friendship.", and the definition for lurid is "Causing horror, shocking."

The definition for prominence is "Importance." Used in a sentence: The singer's prominence ensured that the concert would sell out. The definition for indecorous is "in bad taste.", the definition for eloquent is "Fluent, expressive.", and the definition for diffident is "Lacking self–confidence."

The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for incidental is "minor.", the definition for hedonism is "Belief that pleasure is the sole aim of life.", and the definition for punctual is "On time."

The definition for combustion is "Act of burning." Used in a sentence: Campers must use fire with great caution to prevent combustion of the parched brush. The definition for celebrated is "widely known, respected.", the definition for garish is "Offensively bright.", and the definition for rehash is "To discuss again."