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 commemorate is "to mark by a ceremony.", the definition for oblivious is "Lacking awareness.", and the definition for stifle is "To repress or discourage."

The definition for drub is "To defeat decisively." Used in a sentence: The powerful young boxer drubbed the longtime champion. The definition for gruff is "rough or stern in manner or speech.", the definition for corrosive is "Bitingly sarcastic.", and the definition for augment is "To make greater."

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 prune is "To reduce by removing excess.", and the definition for prominence is "Importance."

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 rhapsody is "state of great happiness.", the definition for anthology is "A collection of selected literary pieces.", and the definition for repel is "To resist, reject."

The definition for heed is "To pay attention to." Used in a sentence: "Heed my advice," the fortuneteller warned Sebastian when he tried to ignore her prophecy. The definition for incidental is "minor.", the definition for genial is "Sympathetic, friendly.", and the definition for appraise is "To evaluate the worth of."