The definition for onset is "Beginning." Used in a sentence: Crocuses bloom at the onset of spring, sometimes even before the snow melts. The definition for demeanor is "behavior towards others.", the definition for incumbent is "Necessary as a duty or responsibility.", and the definition for benevolent is "Kind, helpful."

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 pallid is "lacking color.", the definition for raucous is "Noisy, rowdy.", and the definition for turpitude is "Essential baseness, depravity."

The definition for induce is "To influence or cause." Used in a sentence: The loud blast of the cannon induced an avalanche. The definition for revive is "to bring back to life.", the definition for ecstatic is "Overwhelmingly emotional.", and the definition for regale is "To amuse."

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 apathetic is "showing little or no emotion.", the definition for colossal is "Immense, enormous.", and the definition for absolve is "To forgive; to free from guilt."

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 incongruous is "not harmonious, incompatible.", the definition for eloquent is "Fluent, expressive.", and the definition for censure is "To find fault with."