The definition for negate is "To make invalid." Used in a sentence: Paula negated Tiffany's argument by proving that her main premise was false. The definition for egotist is "self–important person.", the definition for derelict is "Abandoned.", and the definition for duplicity is "Deceptive thought, speech, or action."

The definition for insinuate is "To suggest indirectly." Used in a sentence: Sinead, who did not like confrontation, insinuated that Beth was lying. The definition for melodious is "having a pleasing melody.", the definition for liability is "A person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage.", and the definition for aerate is "To supply with air."

The definition for dubious is "Questionable." Used in a sentence: Karl found Kevin's claim that he was sick dubious, as he had just seen him playing football. The definition for benevolent is "kind, helpful.", the definition for prune is "To reduce by removing excess.", and the definition for embellish is "To decorate."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for garish is "offensively bright.", the definition for opportune is "Suitable or convenient.", and the definition for buffer is "Protective barrier."

The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for procrastinate is "to put off intentionally.", the definition for incumbent is "Necessary as a duty or responsibility.", and the definition for rehash is "To discuss again."