The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for demean is "to lower status.", the definition for combustion is "Act of burning.", and the definition for clarity is "Clearness."

The definition for egotist is "Self–important person." Used in a sentence: Darren dreaded carpooling with the egotist Shelly, who talked about herself nonstop. The definition for prune is "to reduce by removing excess.", the definition for avian is "Relating to birds.", and the definition for pretentious is "Making unjustified claims."

The definition for civility is "Politeness." Used in a sentence: The usually unruly Thomas acted with great civility when his favorite uncle visited. The definition for rehash is "to discuss again.", the definition for insinuate is "To suggest indirectly.", and the definition for raspy is "rough, grating."

The definition for stealth is "The act of moving secretly or unnoticed." Used in a sentence: The burglar took the ring by stealth, slipping it from the sleeping woman's finger. The definition for epistolary is "contained or carried on in letters.", the definition for raspy is "rough, grating.", and the definition for appraise is "To evaluate the worth of."

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 preclude is "to rule out in advance.", the definition for egotist is "Self–important person.", and the definition for corrosive is "Bitingly sarcastic."