n. 25B6; noun
the bitterness of the medicine : SHARPNESS, acidity, acridity, tartness, sourness, harshness, vinegariness; technical acerbity.
his bitterness grew : RESENTMENT, rancour, indignation, grudge, spite, sullenness, sourness, churlishness, moroseness, petulance, pique, peevishness.
the bitterness of war : TRAUMA, pain, agony, grief; unpleasantness, disagreeableness, nastiness; heartache, heartbreak, distress, desolation, despair, tragedy.
there was no bitterness between them : ACRIMONY, hostility, antipathy, antagonism, enmity, animus, friction, rancour, vitriol, hatred, loathing, venom, poison, nastiness, ill feeling, ill will, bad blood.
sweetness, magnanimity, contentment, warmth, goodwill.