imbitter

Im*bit"ter, v. t. [imp. & p. p. Imbittered; p. pr. & vb. n. Imbittering.] Etym: [Pref. im- in + bitter. Cf. Embitter.] [Written also embitter.] Defn: 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.

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