The definition for avian is "Relating to birds." Used in a sentence: The old man affectionately referred to pigeons as his "avian friends." The definition for distortion is "the act of twisting out of shape.", the definition for extant is "Currently existing.", and the definition for commemorate is "To mark by a ceremony."

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 liability is "a person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage.", the definition for duplicity is "Deceptive thought, speech, or action.", and the definition for retroactive is "effective as of a prior time or condition."

The definition for servile is "Fearfully submissive." Used in a sentence: Felicia's servile attitude annoyed her boss, who preferred an assistant with more backbone. The definition for raucous is "noisy, rowdy.", the definition for straddle is "To favor opposing sides.", and the definition for incidental is "Minor."

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 diffident is "lacking self–confidence.", the definition for naive is "Lacking worldy wisdom.", and the definition for avian is "Relating to birds."

The definition for nurture is "To further the development of." Used in a sentence: Our cat made a nest of blankets to nurture her newborn kittens. The definition for derelict is "abandoned.", the definition for lenient is "Mild or tolerant.", and the definition for meticulous is "Extrememly careful regarding details."