The definition for punctual is "On time." Used in a sentence: Ron was worried when the usually punctual Amanda was late for the show. The definition for beneficial is "helpful.", the definition for perception is "Capacity for seeing or understanding.", and the definition for accentuate is "To emphasize."

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 egotist is "self–important person.", the definition for stern is "Harsh, severe.", and the definition for stifle is "To repress or discourage."

The definition for oblivious is "Lacking awareness." Used in a sentence: Love–struck Charlie was oblivious to everyone but the object of his affection. The definition for diffident is "lacking self–confidence.", the definition for flaw is "An imperfection.", and the definition for garish is "Offensively bright."

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 clarity is "clearness.", the definition for belated is "Past the normal or proper time.", and the definition for raucous is "Noisy, rowdy."

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 recrimination is "a retaliatory accusation.", the definition for demeanor is "Behavior towards others.", and the definition for exception is "A case to which the rule does not apply."