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 incisive is "impressively direct and decisive.", the definition for regale is "To amuse.", and the definition for pretense is "False intention or purpose."

The definition for adversary is "One who opposes or resists." Used in a sentence: Franklin hoped to defeat his adversary in the afternoon's tennis match. The definition for discern is "to recognize as separate as distinct.", the definition for oblivious is "Lacking awareness.", and the definition for perception is "Capacity for seeing or understanding."

The definition for sociable is "Inclined to seek companionship." Used in a sentence: The sociable Glenda was delighted to receive the party invitation. The definition for catastrophic is "relating to extreme misfortune.", the definition for iridescent is "Having a lustrous or attractivve quality.", and the definition for combative is "Eager to fight."

The definition for gruff is "Rough or stern in manner or speech." Used in a sentence: Heidi's grandfather was gruff, barking stern orders and hardly smiling. The definition for prominence is "importance.", the definition for gruff is "Rough or stern in manner or speech.", and the definition for induce is "To influence or cause."

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 iridescent is "having a lustrous or attractivve quality.", the definition for drab is "Dull, monotonous.", and the definition for avian is "Relating to birds."