Synonyms and related words :
abject apology, acknowledgment, apologies, apology, attrition, ayenbite of inwit, bitterness, breast-beating, compunction, confession, contriteness, excuse, grief, mea culpa, penance, penitence, penitently, regret, regretfulness, regrets, regretting, remorse, remorse of conscience, remorsefulness, repentance, repining, rue, ruth, shame, shamefacedness, shamefastness, shamefulness, sorriness, sorrow, wistfulness