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 exception is "a case to which the rule does not apply.", the definition for retroactive is "effective as of a prior time or condition.", and the definition for raucous is "Noisy, rowdy."

The definition for buffer is "Protective barrier." Used in a sentence: The dense trees acted as a buffer against the heavy rain. The definition for duplicity is "deceptive thought, speech, or action.", the definition for inviolable is "Secure from assault of trespass.", and the definition for futile is "Without purpose, completely ineffective."

The definition for epistolary is "Contained or carried on in letters." Used in a sentence: The shoebox filled with letters was the ony remains of Ming's epistolary friendship with Emile. The definition for pomp is "showy display.", the definition for aerate is "To supply with air.", and the definition for censure is "To find fault with."

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 implement is "to carry out or accomplish.", the definition for precept is "A general rule of action.", and the definition for commemorate is "To mark by a ceremony."

The definition for raucous is "Noisy, rowdy." Used in a sentence: Serena, who preferred quiet conversation, left the rancous party. The definition for recrimination is "a retaliatory accusation.", the definition for heed is "To pay attention to.", and the definition for straddle is "To favor opposing sides."