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 mediate is "to come between parties in order to reconcile.", the definition for revoke is "To cancel by taking back.", and the definition for trove is "Valuable collection."

The definition for discern is "To recognize as separate as distinct." Used in a sentence: The pastry connoisseur was able to discern Swiss from Belgian chocolate. The definition for appraise is "to evaluate the worth of.", the definition for revoke is "To cancel by taking back.", and the definition for stifle is "To repress or discourage."

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 demean is "to lower status.", the definition for hedonism is "Belief that pleasure is the sole aim of life.", and the definition for rehash is "To discuss again."

The definition for untenable is "Not able to be defended." Used in a sentence: Rashid made the untenable statement that George Washington was the second president of the United States. The definition for iridescent is "having a lustrous or attractivve quality.", the definition for corroborate is "To support with evidence.", and the definition for heinous is "Shockingly evil."

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 lenient is "mild or tolerant.", the definition for exalt is "To elevate by praise.", and the definition for meticulous is "Extrememly careful regarding details."