siffilate

English

Verb

siffilate (third-person singular simple present siffilates, present participle siffilating, simple past and past participle siffilated)

1. (transitive or intransitive) To whisper or to hiss softly.
   • 1837, Frederick Marryat, Snarleyyow; Or, The Dog Fiend‎^[1]:

     But before Smallbones was summoned, he had time to whisper to one or two of the conspirators "He's gone." It was enough; in less than a minute the whisper was passed throughout the cutter. "He's gone!' was siffilated above and below, until it met the ears of even Corporal Van Spitter, who had it from a marine.