The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for colossal is "immense, enormous.", the definition for antidote is "Something that relieves or counteracts.", and the definition for onset is "Beginning."

The definition for repel is "To resist, reject." Used in a sentence: The soldiers made a massive charge to repel the invaders. The definition for illuminate is "to make clear.", the definition for polarize is "To break up into opposing groups.", and the definition for demeanor is "Behavior towards others."

The definition for implausible is "Unbelievable." Used in a sentence: Claudia's implausible excuse failed to convince her teacher. The definition for flourish is "to make bold, sweeping gestures.", the definition for gargantuan is "Gigantic.", and the definition for entangle is "To involve in trouble."

The definition for indecorous is "In bad taste." Used in a sentence: My parents banned Chad from our house because of his indecorous behavior at dinner. The definition for supple is "flexible.", the definition for punctual is "On time.", and the definition for precept is "A general rule of action."

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 buffer is "protective barrier.", the definition for revoke is "To cancel by taking back.", and the definition for regurgitate is "To pour out or throw back."