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 corroborate is "to support with evidence.", the definition for comprehensible is "Understandable.", and the definition for naive is "Lacking worldy wisdom."

The definition for exasperation is "The state of being irritated." Used in a sentence: The longer Jorge waited in line at the ticket counter, the more his exasperation grew. The definition for servile is "fearfully submissive.", the definition for elate is "To fill with joy.", and the definition for aerate is "To supply with air."

The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for garish is "offensively bright.", the definition for sociable is "Inclined to seek companionship.", and the definition for rancorous is "Marked by deep ill–will."

The definition for salvage is "To save from ruin." Used in a sentence: After the fire, Mrs. Han tried to salvage her family photos from the wreckage. The definition for finite is "having definite limits.", the definition for fidelity is "State of being faithful.", and the definition for promote is "To contribute to the growth or prosperity of."

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 demean is "to lower status.", the definition for surplus is "Excess.", and the definition for genial is "Sympathetic, friendly."