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 archaic is "characteristic of an earlier time.", the definition for diffident is "Lacking self–confidence.", and the definition for oblivious is "Lacking awareness."

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 distortion is "the act of twisting out of shape.", the definition for appalling is "Inspiring dismay or disgust.", and the definition for disconcert is "To throw into confusion."

The definition for futile is "Without purpose, completely ineffective." Used in a sentence: Arguing with Andrew is futile because he never changes his mind. The definition for raucous is "noisy, rowdy.", the definition for flaw is "An imperfection.", and the definition for procrastinate is "To put off intentionally."

The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for camaraderie is "spirit of friendship.", the definition for prominence is "Importance.", and the definition for promote is "To contribute to the growth or prosperity of."

The definition for benevolent is "Kind, helpful." Used in a sentence: Sherman revealed his benevolent side when he offered to help Carter with his homework. The definition for discern is "to recognize as separate as distinct.", the definition for interminable is "Never ending, or seemingly endless.", and the definition for incumbent is "Necessary as a duty or responsibility."