The definition for raucous is "Noisy, rowdy." Used in a sentence: Serena, who preferred quiet conversation, left the rancous party. The definition for commemorate is "to mark by a ceremony.", the definition for parity is "Equality.", and the definition for moderate is "Tending toward the average."

The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for demean is "to lower status.", the definition for onset is "Beginning.", and the definition for placebo is "An inactive substance used in medical testing."

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 abate is "become less in amount or intensity.", the definition for regurgitate is "To pour out or throw back.", and the definition for deferment is "The act of delaying."

The definition for preclude is "To rule out in advance." Used in a sentence: "Having cake now will preclude dessert later," said Amber's mother. The definition for camaraderie is "spirit of friendship.", the definition for servile is "Fearfully submissive.", and the definition for pantomime is "Telling a story through gestures."

The definition for iridescent is "Having a lustrous or attractivve quality." Used in a sentence: The movie star's iridescent presence charmed even the hardened reporter. The definition for antidote is "something that relieves or counteracts.", the definition for deferment is "The act of delaying.", and the definition for drub is "To defeat decisively."