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 flaw is "an imperfection.", the definition for commemorate is "To mark by a ceremony.", and the definition for periodic is "Occurring at regular intervals."

The definition for impenitent is "Lacking remorse." Used in a sentence: The impenitent criminal received a harsh penalty, but his remorseful accomplice was released. The definition for celebrated is "widely known, respected.", the definition for penurious is "Extrememly stingy.", and the definition for garish is "Offensively bright."

The definition for aerate is "To supply with air." Used in a sentence: Every spring, Soloman used his tiller to aerate the compact soil. The definition for pretentious is "making unjustified claims.", the definition for naive is "Lacking worldy wisdom.", and the definition for perception is "Capacity for seeing or understanding."

The definition for archaic is "Characteristic of an earlier time." Used in a sentence: In the world of high fashion, two–year–old shoes are considered positively archaic. The definition for curtail is "to make less.", the definition for benefactor is "One who offers financial help.", and the definition for defiant is "Showing bold resistance."

The definition for clairvoyance is "Ability to see things beyond ordinary perception." Used in a sentence: Rosa used her clairvoyance to help Alexander find his lost keys. The definition for liability is "a person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage.", the definition for benevolent is "Kind, helpful.", and the definition for buffer is "Protective barrier."