Green’s Dictionary of Slang

of journalists, to write sycophantically.

1870

Sportsman (London) 23 June 2/1: Sir Percival Macsycophant never did anything like the ‘boo-boin’’ that In performed some of our London newspapers. Fleet-street has invented ‘royal’ literature for itself, and whenever royalty is mentioned gushing writers begin ‘boo-booin’’ .