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 obnoxious is "highly offensive.", the definition for derelict is "Abandoned.", and the definition for gravity is "Importance, significance."

The definition for anthology is "A collection of selected literary pieces." Used in a sentence: The writer was thrilled when his story was included in an anthology of American masterpieces. The definition for mandate is "an official order or commission to do something.", the definition for untenable is "Not able to be defended.", and the definition for heinous is "Shockingly evil."

The definition for interminable is "Never ending, or seemingly endless." Used in a sentence: The impatient Zoe found the longwinded lecture interminable. The definition for nurture is "to further the development of.", the definition for punctual is "On time.", and the definition for derivative is "Lacking originality."

The definition for iridescent is "Having a lustrous or attractivve quality." Used in a sentence: The movie star's iridescent presence charmed even the hardened reporter. The definition for pallid is "lacking color.", the definition for benevolent is "Kind, helpful.", and the definition for serenity is "Calmness."

The definition for punctual is "On time." Used in a sentence: Ron was worried when the usually punctual Amanda was late for the show. The definition for egotist is "self–important person.", the definition for revoke is "To cancel by taking back.", and the definition for facade is "false or superficial appearance."