[f. as prec. + -ING2.] That embitters or tends to embitter.
1746. Hervey, Medit. (1818), 209. This embittering circumstance would spoil their relish.
1872. Geo. Eliot, Middlem., III. IV. 356. The suspicion … was embittering. Ibid., IV. V. 121. The imbittering discovery that [etc.].
