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 augment is "to make greater.", the definition for polarize is "To break up into opposing groups.", and the definition for derivative is "Lacking originality."

The definition for augment is "To make greater." Used in a sentence: Wanda read the dictionary every night to augment her vocabulary. The definition for abate is "become less in amount or intensity.", the definition for flagrant is "Noticeably offensive.", and the definition for combustion is "Act of burning."

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 perception is "capacity for seeing or understanding.", the definition for clairvoyance is "Ability to see things beyond ordinary perception.", and the definition for derivative is "Lacking originality."

The definition for straddle is "To favor opposing sides." Used in a sentence: Kia straddled the issue, not wanting to say whether James or Tara was right. The definition for methodical is "performed in an orderly manner.", the definition for negate is "To make invalid.", and the definition for egotist is "Self–important person."

The definition for duplicity is "Deceptive thought, speech, or action." Used in a sentence: The life of an undercover detective is filed with necessary duplicity. The definition for naive is "lacking worldy wisdom.", the definition for turpitude is "Essential baseness, depravity.", and the definition for polarize is "To break up into opposing groups."