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 accentuate is "to emphasize.", the definition for elusive is "Hard to grasp.", and the definition for dubious is "Questionable."

The definition for insolence is "Boldness or rudeness." Used in a sentence: The boy's insolence to the policeman embarrassed his mother. The definition for derivative is "lacking originality.", the definition for comparable is "Similar, equivalent.", and the definition for pantomime is "Telling a story through gestures."

The definition for naive is "Lacking worldy wisdom." Used in a sentence: The naive Simon assumed that everyone was as simple and kind as he was. The definition for demeanor is "behavior towards others.", the definition for fragile is "Delicate.", and the definition for oblivious is "Lacking awareness."

The definition for liability is "A person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage." Used in a sentence: Kevin's growing fatigue was a liability as he attempted to climb the steep hill. The definition for heed is "to pay attention to.", the definition for negate is "To make invalid.", and the definition for repentant is "Feeling regret."

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 colossal is "immense, enormous.", the definition for revoke is "To cancel by taking back.", and the definition for solace is "Source of consolation."