Im*bit"ter (?), v. t. [imp. & p. p. Imbittered (?); p. pr. & vb. n. Imbittering.] [Pref. im- in + bitter. Cf. Embitter.] [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.
© Webster 1913.