sycophantize

From sycophant +‎ -ize.

sycophantize (third-person singular simple present sycophantizes, present participle sycophantizing, simple past and past participle sycophantized)

1. (archaic) To act like a sycophant.

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