The definition for incidental is "Minor." Used in a sentence: The accountant advised Justine not to report her incidental expenses. The definition for corrosive is "bitingly sarcastic.", the definition for commemorate is "To mark by a ceremony.", and the definition for untenable is "Not able to be defended."

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 indecorous is "in bad taste.", the definition for ethical is "Conforming to accepted standards.", and the definition for punctual is "On time."

The definition for combustion is "Act of burning." Used in a sentence: Campers must use fire with great caution to prevent combustion of the parched brush. The definition for condone is "to treat as acceptable.", the definition for comprehensible is "Understandable.", and the definition for surplus is "Excess."

The definition for foil is "One that enhances or underscores by contrast." Used in a sentence: The sweet cookie was a perfect foil to the sour lemon sorbet. The definition for rancorous is "marked by deep ill–will.", the definition for prudent is "Marked by wisdom, shrewd.", and the definition for corrosive is "Bitingly sarcastic."

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 regurgitate is "to pour out or throw back.", the definition for mediate is "To come between parties in order to reconcile.", and the definition for incisive is "Impressively direct and decisive."