500
Which of the following is the longest word that appears in a play by William Shakespeare?
Honorificabilitudinitatibus
shows up in a speech by Costard in Shakespeare's comedy Love's Labour's Lost: "O, they have liv'd long on the almsbasket of words. I marvel thy master hath not eaten thee for a word, for thou art not so long by the head as honorificabilitudinitatibus. Thou art easier swallowed than a flap-dragon."