D defs.my
Entry 1 sense Webster, 1913

Oh

/(ō)/ · IPA /oʊ/
01 interj. An exclamation expressing various emotions, according to the tone and manner, especially surprise, pain, sorrow, anxiety, or a wish. See th…
  1. 1.
    An exclamation expressing various emotions, according to the tone and manner, especially surprise, pain, sorrow, anxiety, or a wish. See the Note under O. See: O