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 derelict is "abandoned.", the definition for nurture is "To further the development of.", and the definition for stealth is "The act of moving secretly or unnoticed."

The definition for illuminate is "To make clear." Used in a sentence: Her excellent lecture illuminated the complicated subject of nuclear physics. The definition for absolve is "to forgive; to free from guilt.", the definition for preclude is "To rule out in advance.", and the definition for gargantuan is "Gigantic."

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 futile is "without purpose, completely ineffective.", the definition for benevolent is "Kind, helpful.", and the definition for rancorous is "Marked by deep ill–will."

The definition for obnoxious is "Highly offensive." Used in a sentence: The manager asked the obnoxious diner to leave the restaurant. The definition for perception is "capacity for seeing or understanding.", the definition for extant is "Currently existing.", and the definition for mandate is "An official order or commission to do something."

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 commemorate is "to mark by a ceremony.", the definition for fragile is "Delicate.", and the definition for duplicity is "Deceptive thought, speech, or action."