The definition for ramble is "To wander, physically or in language." Used in a sentence: Professor Tan rambled during his lectures, frequently straying from the subject. The definition for diffident is "lacking self–confidence.", the definition for corrosive is "Bitingly sarcastic.", and the definition for archetypal is "Characteristic of the original model or perfect example."

The definition for augment is "To make greater." Used in a sentence: Wanda read the dictionary every night to augment her vocabulary. The definition for ploy is "a contrived plan.", the definition for duplicity is "Deceptive thought, speech, or action.", and the definition for indecorous is "In bad taste."

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 archetypal is "characteristic of the original model or perfect example.", the definition for mediate is "To come between parties in order to reconcile.", and the definition for perception is "Capacity for seeing or understanding."

The definition for polarize is "To break up into opposing groups." Used in a sentence: Thelma tended to polarize discussions rather than to encourage compromise. The definition for distortion is "the act of twisting out of shape.", the definition for brandish is "To shake or wave menacingly.", and the definition for regale is "To amuse."

The definition for fidelity is "State of being faithful." Used in a sentence: Unlike her fickle friend Benji, May Belle was known for her fidelity. The definition for placebo is "an inactive substance used in medical testing.", the definition for regale is "To amuse.", and the definition for trove is "Valuable collection."