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 exception is "a case to which the rule does not apply.", the definition for ethical is "Conforming to accepted standards.", and the definition for untenable is "Not able to be defended."

The definition for civility is "Politeness." Used in a sentence: The usually unruly Thomas acted with great civility when his favorite uncle visited. The definition for genial is "sympathetic, friendly.", the definition for sociable is "Inclined to seek companionship.", and the definition for lurid is "Causing horror, shocking."

The definition for repel is "To resist, reject." Used in a sentence: The soldiers made a massive charge to repel the invaders. The definition for apathetic is "showing little or no emotion.", the definition for absolve is "To forgive; to free from guilt.", and the definition for melee is "A tumultuous fight among several people."

The definition for ecstatic is "Overwhelmingly emotional." Used in a sentence: They were ecstatic when their team won the championship game in the last second. The definition for augment is "to make greater.", the definition for revive is "To bring back to life.", and the definition for mandate is "An official order or commission to do something."

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 stifle is "to repress or discourage.", the definition for retroactive is "effective as of a prior time or condition.", and the definition for extenuating is "Partially excusing."