Synonyms to heartfelt apology

apology, abject apology, acknowledgment, admission, advocating, advocation, alibi, amends, apologetic, apologetics, apologia, apologies, argument, argumentation, atonement, attrition, ayenbite of inwit, bicker, bickering, bitterness, blind, breast-beating, casuistry, championing, change of heart, cloak, color, concession, confession, contention, contriteness, contrition, controversy, cover, cover story, cover-up, deathbed repentance, defense, device, disputation, dispute, espousal, excuse, extenuation, facade, feint, flyting, front, gloss, grief, guise, handle, hassle, hubbub, justification, lame excuse, litigation, locus standi, logomachy, mask, mea culpa, ostensible motive, palliation, paper war, passage of arms, penance, penitence, polemic, polemics, poor excuse, pretense, pretension, pretext, protestation, public motive, put-off, redress, reformation, refuge, regret, regretfulness, regrets, regretting, remorse, remorse of conscience, remorsefulness, reparation, repentance, repining, rhubarb, saeta, satisfaction, screen, semblance, set-to, sham, shame, shamefacedness, shamefastness, sh