Synonyms and related words :
bold, brazen, brazenfaced, exhibitionistic, flagrant, forward, griefless, immodest, notorious, regretless, remorseless, shameless, sorrowless, unabashed, unblushing, unembarrassed, ungrieving, unmodest, unregretful, unregretting, unremorseful, unrepining, unrueful, unsorrowful, unsorrowing, unsorry