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 fidelity is "state of being faithful.", the definition for obnoxious is "Highly offensive.", and the definition for discern is "To recognize as separate as distinct."

The definition for cunning is "Showing clever insight." Used in a sentence: The general devised a cunning strategy to outfox the enemy. The definition for melee is "a tumultuous fight among several people.", the definition for benefactor is "One who offers financial help.", and the definition for liability is "A person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage."

The definition for proximity is "Closeness." Used in a sentence: The proximity of Tia's house to school meant that she could walk there in five minutes. The definition for revive is "to bring back to life.", the definition for untenable is "Not able to be defended.", and the definition for anthology is "A collection of selected literary pieces."

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 inviolable is "secure from assault of trespass.", the definition for buffoonery is "Foolish behavior.", and the definition for opportune is "Suitable or convenient."

The definition for naive is "Lacking worldy wisdom." Used in a sentence: The naive Simon assumed that everyone was as simple and kind as he was. The definition for aesthete is "person having or affecting sensitivity to beauty.", the definition for diffident is "Lacking self–confidence.", and the definition for extant is "Currently existing."