The definition for rancorous is "Marked by deep ill–will." Used in a sentence: The rancorous competition between the two chess clubs actually ended in a brawl. The definition for surplus is "excess.", the definition for indecorous is "In bad taste.", and the definition for exasperation is "The state of being irritated."

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 sociable is "inclined to seek companionship.", the definition for buffoonery is "Foolish behavior.", and the definition for manifest is "Obvious."

The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for pantomime is "telling a story through gestures.", the definition for foil is "One that enhances or underscores by contrast.", and the definition for negate is "To make invalid."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for serenity is "calmness.", the definition for placebo is "An inactive substance used in medical testing.", and the definition for pallid is "Lacking color."

The definition for perception is "Capacity for seeing or understanding." Used in a sentence: His incredible perception made him the best detective on the force. The definition for frugal is "thrifty, cheap.", the definition for redouble is "To make twice as great.", and the definition for fragile is "Delicate."