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 duplicity is "deceptive thought, speech, or action.", the definition for pallid is "Lacking color.", and the definition for periodic is "Occurring at regular intervals."

The definition for curtail is "To make less." Used in a sentence: Doreen decided to curtail her spending after she bounced a check. The definition for untenable is "not able to be defended.", the definition for demeanor is "Behavior towards others.", and the definition for accommodate is "To give consideration to."

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 drab is "dull, monotonous.", the definition for stern is "Harsh, severe.", and the definition for oblivious is "Lacking awareness."

The definition for comprehensible is "Understandable." Used in a sentence: Shannon spoke slowly so her directions would be comprehensible to her foreign visitor. The definition for buffer is "protective barrier.", the definition for pathos is "Sympathetic pity.", and the definition for scamper is "To run quickly."

The definition for fickle is "Lacking constancy, changeable." Used in a sentence: The fickle Senji had a new best friend every month. The definition for solace is "source of consolation.", the definition for incidental is "Minor.", and the definition for repel is "To resist, reject."