The definition for melodious is "Having a pleasing melody." Used in a sentence: The melodious sounds of the symphony soothed Tim after his trying day. The definition for implausible is "unbelievable.", the definition for diffident is "Lacking self–confidence.", and the definition for gruff is "Rough or stern in manner or speech."

The definition for stern is "Harsh, severe." Used in a sentence: The stern principal canceled the prom after the seniors played a silly prank. The definition for gruff is "rough or stern in manner or speech.", the definition for scamper is "To run quickly.", and the definition for pomp is "Showy display."

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 revoke is "to cancel by taking back.", the definition for punctual is "On time.", and the definition for scamper is "To run quickly."

The definition for exception is "A case to which the rule does not apply." Used in a sentence: The teacher made an exception and let Gina eat her snack in class. The definition for archetypal is "characteristic of the original model or perfect example.", the definition for frugal is "Thrifty, cheap.", and the definition for stealth is "The act of moving secretly or unnoticed."

The definition for raucous is "Noisy, rowdy." Used in a sentence: Serena, who preferred quiet conversation, left the rancous party. The definition for sociable is "inclined to seek companionship.", the definition for brandish is "To shake or wave menacingly.", and the definition for futile is "Without purpose, completely ineffective."