bitter

adj

1.(all usu. of taste) acrid, biting, pungent; acid, tart, harsh, sour, subacid, acetous, vinegar-ish, vinegary; unsweet, unsweetened; acerb, acerbic, acidulous, acidulent, acescent, acidulated; distasteful, unappetizing, unpalatable, unsavory; disagreeable, unpleasant, nasty, unlikeable.

2. distressful, distressing, harrowing, heartbreaking, heart rending, tormenting; sad, unhappy, sorrowful, woeful, tearful, lamentable, mournful, regretful; poignant, moving, touching; acute, intense, severe; painful, smarting, agonizing, torturous, excruciating; grievous, crushing, deplorable, dreadful, brutal; oppressive, burdensome, consuming, racking, onerous; ruinous, calamitous, disastrous, tragic.

3. hostile, resentful, indignant, piqued, angry; adverse, opposed, opposing; aggressive, belligerent, bellicose; peevish, petulant, crabbed, testy, splenetic, touchy, waspish, irascible, edgy; spiteful, virulent, malicious, venomous, vitriolic, vicious; antagonistic, rancorous, ill-disposed, malevolent, malign; ill-tempered, ill-humored, ill-natured, short-tempered; morose, surly, sullen, sour, moody.

4. caustic, mordant, acrimonious, bitter, acrid, acidulous, acid, pungent; trenchant, cutting, incisive, slashing, scathing; penetrating, piercing, stinging, pricking, nipping, biting; astringent, severe, stern, austere, stringent; harsh, keen, pointed, sharp, sharp-tongued.

5. sarcastic, satirical, ironic, ironical, cynical; double-edged, edged; contemptuous, contumelious, taunting, teasing; scornful, mocking, derisive, derisory, sardonic.

6. insulting, excoriating, denouncing, berating, lashing; abusive, corrosive, corroding, erosive; cruel, mean, brutal; unkind, uncharitable, unbenevolent, uncordial, unamiable, unfriendly.