Imbitter /(?)/

Im·bit·ter

Imbitter

v. t.

imp. & p. p. Imbittered; p. pr. & vb. n. Imbittering

  1. To make bitter; hence, to make distressing or more distressing; to make sad, morose, sour, or malignant.
    Is there anything that more imbitters the enjoyment of this life than shame?
    Imbittered against each other by former contests.