Im·bit·ter v. t. [imp. & p. p. Imbittered p. pr. & vb. n. Imbittering.]  [Written also embitter.] 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?   --South.
     Imbittered against each other by former contests.   --Bancroft.
  ◄ ►