Most important 500 Word List for TOEFL Test (W)

WAIVE: To give up (privileges, etc.); to do without - waived his rights to the property. Synonyms: relinquish, forgo, forsake.

WHIM (adj.: WHIMSICAL): A sudden notion or passing fancy -frequently acted on the whim of the moment. Synonyms: caprice, vagary, crotchet.

WRITHE: To twist about (usually with pain) - writhed in agony on the floor. Synonyms: contort, squirm.