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 gruff is "rough or stern in manner or speech.", the definition for demean is "To lower status.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for preclude is "To rule out in advance." Used in a sentence: "Having cake now will preclude dessert later," said Amber's mother. The definition for rhapsody is "state of great happiness.", the definition for onset is "Beginning.", and the definition for methodical is "Performed in an orderly manner."

The definition for exalt is "To elevate by praise." Used in a sentence: The fireman was publicly exalted for his heroism. The definition for heed is "to pay attention to.", the definition for drab is "Dull, monotonous.", and the definition for ramble is "To wander, physically or in language."

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 heed is "to pay attention to.", the definition for raspy is "rough, grating.", and the definition for implement is "To carry out or accomplish."

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 clairvoyance is "ability to see things beyond ordinary perception.", the definition for appalling is "Inspiring dismay or disgust.", and the definition for rail is "To scold in harsh language."