The definition for avian is "Relating to birds." Used in a sentence: The old man affectionately referred to pigeons as his "avian friends." The definition for stern is "harsh, severe.", the definition for defiant is "Showing bold resistance.", and the definition for drab is "Dull, monotonous."

The definition for refurbish is "To brighten or freshen." Used in a sentence: Leeanne cleaned and mended all weekend to refurbish the shabby apartment. The definition for procrastinate is "to put off intentionally.", the definition for euphoria is "Feeling of great happiness.", and the definition for periodic is "Occurring at regular intervals."

The definition for perception is "Capacity for seeing or understanding." Used in a sentence: His incredible perception made him the best detective on the force. The definition for compulsion is "an irresistible impulse.", the definition for discern is "To recognize as separate as distinct.", and the definition for opportune is "Suitable or convenient."

The definition for inviolable is "Secure from assault of trespass." Used in a sentence: Situated on a mountain, with sixteen–foot walls, the castle was inviolable. The definition for precept is "a general rule of action.", the definition for redouble is "To make twice as great.", and the definition for benevolent is "Kind, helpful."

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 mandate is "an official order or commission to do something.", the definition for archetypal is "Characteristic of the original model or perfect example.", and the definition for melee is "A tumultuous fight among several people."