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 gruff is "rough or stern in manner or speech.", the definition for stern is "Harsh, severe.", and the definition for implausible is "Unbelievable."

The definition for colossal is "Immense, enormous." Used in a sentence: After pushing with all his might, Frank realized he could never move the colossal boulder. The definition for elusive is "hard to grasp.", the definition for demeanor is "Behavior towards others.", and the definition for incidental is "Minor."

The definition for regurgitate is "To pour out or throw back." Used in a sentence: The teacher wanted us to examine ideas rather than to regurgitate memorized facts. The definition for disconcert is "to throw into confusion.", the definition for lenient is "Mild or tolerant.", and the definition for compulsion is "An irresistible impulse."

The definition for gravity is "Importance, significance." Used in a sentence: Understanding the gravity of his error, Ken offered his humblest apology. The definition for scamper is "to run quickly.", the definition for conduit is "Means for transmitting or distributing.", and the definition for heinous is "Shockingly evil."

The definition for demeanor is "Behavior towards others." Used in a sentence: Carlos was well liked because of his charming demeanor. The definition for corrective is "intended to correct.", the definition for placebo is "An inactive substance used in medical testing.", and the definition for grandiose is "With an affectation of grandeur."