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 placebo is "an inactive substance used in medical testing.", the definition for apathetic is "Showing little or no emotion.", and the definition for condone is "To treat as acceptable."

The definition for penurious is "Extrememly stingy." Used in a sentence: Ebenezer Scrooge was most penurious, refusing to give even a penny to charity. The definition for onset is "beginning.", the definition for raucous is "Noisy, rowdy.", and the definition for incumbent is "Necessary as a duty or responsibility."

The definition for trove is "Valuable collection." Used in a sentence: Walter's trove of vintage baseball cards was worth thousands of dollars. The definition for untenable is "not able to be defended.", the definition for disconcert is "To throw into confusion.", and the definition for compulsion is "An irresistible impulse."

The definition for mediate is "To come between parties in order to reconcile." Used in a sentence: The diplomatic Henry was able to mediate between the quarreling sisters. The definition for fragile is "delicate.", the definition for corrective is "Intended to correct.", and the definition for belated is "Past the normal or proper time."

The definition for apathetic is "Showing little or no emotion." Used in a sentence: Carmine was concerned about his usually cheerful brother's apathetic attitude. The definition for authoritarian is "favoring absolute obedience to authority.", the definition for accommodate is "To give consideration to.", and the definition for gargantuan is "Gigantic."