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 combative is "eager to fight.", the definition for authoritarian is "Favoring absolute obedience to authority.", and the definition for duplicity is "Deceptive thought, speech, or action."

The definition for implausible is "Unbelievable." Used in a sentence: Claudia's implausible excuse failed to convince her teacher. The definition for lenient is "mild or tolerant.", the definition for flaunt is "To display showily.", and the definition for absolve is "To forgive; to free from guilt."

The definition for elate is "To fill with joy." Used in a sentence: It elated Margaret to be awarded first place in the science fair. The definition for melee is "a tumultuous fight among several people.", the definition for stern is "Harsh, severe.", and the definition for buffer is "Protective barrier."

The definition for flaunt is "To display showily." Used in a sentence: Sheila, who could not resist bragging, flaunted the "A" marked on her test paper. The definition for accentuate is "to emphasize.", the definition for surplus is "Excess.", and the definition for benevolent is "Kind, helpful."

The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for duplicity is "deceptive thought, speech, or action.", the definition for defiant is "Showing bold resistance.", and the definition for derivative is "Lacking originality."