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 elusive is "hard to grasp.", the definition for colossal is "Immense, enormous.", and the definition for diffident is "Lacking self–confidence."

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 drab is "dull, monotonous.", the definition for compulsion is "An irresistible impulse.", and the definition for fraud is "Trick."

The definition for recrimination is "A retaliatory accusation." Used in a sentence: Frank, who was wounded by Sally's remark, made a bitter recrimination. The definition for camaraderie is "spirit of friendship.", the definition for censure is "To find fault with.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for advantageous is "Giving an advantage." Used in a sentence: The house's location in the best school district was advantageous to the seller. The definition for recrimination is "a retaliatory accusation.", the definition for stern is "Harsh, severe.", and the definition for extant is "Currently existing."

The definition for accentuate is "To emphasize." Used in a sentence: Carla used red ribbons to accentuate the coppery tones in her hair. The definition for awe is "emotion combining dread and wonder.", the definition for punctual is "On time.", and the definition for buffoonery is "Foolish behavior."