outflatter

From out- +‎ flatter.

outflatter (third-person singular simple present outflatters, present participle outflattering, simple past and past participle outflattered)

1. (transitive) To exceed in flattery, to flatter more or better than.

• “outflatter”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.