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 intricate is "having complex and interrelated parts.", the definition for commemorate is "To mark by a ceremony.", and the definition for refurbish is "To brighten or freshen."

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 inflammatory is "tending to excite anger.", the definition for deferment is "The act of delaying.", and the definition for frugal is "Thrifty, cheap."

The definition for curtail is "To make less." Used in a sentence: Doreen decided to curtail her spending after she bounced a check. The definition for inviolable is "secure from assault of trespass.", the definition for gravity is "Importance, significance.", and the definition for colossal is "Immense, enormous."

The definition for fickle is "Lacking constancy, changeable." Used in a sentence: The fickle Senji had a new best friend every month. The definition for derivative is "lacking originality.", the definition for serenity is "Calmness.", and the definition for comparable is "Similar, equivalent."

The definition for polarize is "To break up into opposing groups." Used in a sentence: Thelma tended to polarize discussions rather than to encourage compromise. The definition for derelict is "abandoned.", the definition for trove is "Valuable collection.", and the definition for refurbish is "To brighten or freshen."