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 regurgitate is "to pour out or throw back.", the definition for civility is "Politeness.", and the definition for ecstatic is "Overwhelmingly emotional."

The definition for conduit is "Means for transmitting or distributing." Used in a sentence: Jason, a notorious gossip, was a conduit for information about his friends. The definition for ploy is "a contrived plan.", the definition for sociable is "Inclined to seek companionship.", and the definition for pantomime is "Telling a story through gestures."

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 straddle is "to favor opposing sides.", the definition for commemorate is "To mark by a ceremony.", and the definition for absolve is "To forgive; to free from guilt."

The definition for gargantuan is "Gigantic." Used in a sentence: The gargantuan monster towered over the ten–story bulding. The definition for disconcert is "to throw into confusion.", the definition for catastrophic is "Relating to extreme misfortune.", and the definition for corrosive is "Bitingly sarcastic."

The definition for melee is "A tumultuous fight among several people." Used in a sentence: After the game, a melee broke out between fans of the opposing teams. The definition for implement is "to carry out or accomplish.", the definition for scamper is "To run quickly.", and the definition for inflammatory is "Tending to excite anger."