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 implement is "to carry out or accomplish.", the definition for opportune is "Suitable or convenient.", and the definition for scamper is "To run quickly."

The definition for combustion is "Act of burning." Used in a sentence: Campers must use fire with great caution to prevent combustion of the parched brush. The definition for regurgitate is "to pour out or throw back.", the definition for raucous is "Noisy, rowdy.", and the definition for flaw is "An imperfection."

The definition for antidote is "Something that relieves or counteracts." Used in a sentence: Veronique found that listening to French music was an antidote for her homesickness. The definition for apathetic is "showing little or no emotion.", the definition for belated is "Past the normal or proper time.", and the definition for beneficial is "Helpful."

The definition for lurid is "Causing horror, shocking." Used in a sentence: The lurid photos of the crime scene upset the jury. The definition for revive is "to bring back to life.", the definition for prudent is "Marked by wisdom, shrewd.", and the definition for interminable is "Never ending, or seemingly endless."

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 exalt is "to elevate by praise.", the definition for exception is "A case to which the rule does not apply.", and the definition for advantageous is "Giving an advantage."