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 periodic is "occurring at regular intervals.", the definition for negate is "To make invalid.", and the definition for exasperation is "The state of being irritated."

The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for incumbent is "necessary as a duty or responsibility.", the definition for flaw is "An imperfection.", and the definition for indecorous is "In bad taste."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for accessible is "easy to reach or to approach.", the definition for servile is "Fearfully submissive.", and the definition for sociable is "Inclined to seek companionship."

The definition for implausible is "Unbelievable." Used in a sentence: Claudia's implausible excuse failed to convince her teacher. The definition for conduit is "means for transmitting or distributing.", the definition for rhapsody is "State of great happiness.", and the definition for straddle is "To favor opposing sides."

The definition for supple is "Flexible." Used in a sentence: The supple leather coat draped like soft cloth around her shoulders. The definition for buffer is "protective barrier.", the definition for obnoxious is "Highly offensive.", and the definition for frugal is "Thrifty, cheap."