The definition for dubious is "Questionable." Used in a sentence: Karl found Kevin's claim that he was sick dubious, as he had just seen him playing football. The definition for revoke is "to cancel by taking back.", the definition for incongruous is "Not harmonious, incompatible.", and the definition for corroborate is "To support with evidence."

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 periodic is "occurring at regular intervals.", the definition for pretentious is "Making unjustified claims.", and the definition for finite is "Having definite limits."

The definition for meticulous is "Extrememly careful regarding details." Used in a sentence: The meticulous detective found every shred of evidence at the crime scene. The definition for insolence is "boldness or rudeness.", the definition for obnoxious is "Highly offensive.", and the definition for punctual is "On time."

The definition for polarize is "To break up into opposing groups." Used in a sentence: Thelma tended to polarize discussions rather than to encourage compromise. The definition for discern is "to recognize as separate as distinct.", the definition for duplicity is "Deceptive thought, speech, or action.", and the definition for incisive is "Impressively direct and decisive."

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 revive is "to bring back to life.", the definition for elusive is "Hard to grasp.", and the definition for proximity is "Closeness."