D defs.my
Entry 1 sense Webster, 1913

Bullish

/bo͝ol'-ĭsh/ · Bull·ish · IPA /ˈbʊlɪʃ/
01 a. Partaking of the nature of a bull, or a blunder.
  1. 1.
    Partaking of the nature of a bull, or a blunder.
    “Let me inform you, a toothless satire is as improper as a toothed sleek stone, and as bullish.” Milton.