The definition for derivative is "Lacking originality." Used in a sentence: Critics panned the movie as a derivative version of last year's Best Picture. The definition for apathetic is "showing little or no emotion.", the definition for regale is "To amuse.", and the definition for duplicity is "Deceptive thought, speech, or action."

The definition for clarity is "Clearness." Used in a sentence: The refreshing water in the mountain stream was remarkable for its clarity. The definition for beneficial is "helpful.", the definition for flourish is "To make bold, sweeping gestures.", and the definition for lurid is "Causing horror, shocking."

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 lenient is "mild or tolerant.", the definition for corrosive is "Bitingly sarcastic.", and the definition for procrastinate is "To put off intentionally."

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 inviolable is "secure from assault of trespass.", the definition for demean is "To lower status.", and the definition for iridescent is "Having a lustrous or attractivve quality."

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 finite is "having definite limits.", the definition for raspy is "rough, grating.", and the definition for plaudits is "Enthusiastic approval."