n. 25B6; verb
they came to regret their decision : BE SORRY ABOUT, feel contrite about, feel remorse about/for, be remorseful about, rue, repent (of), feel repentant about, be regretful at/about.
regretting the passing of youth : MOURN, grieve for/over, feel grief at, weep over, sigh over, feel sad about, lament, sorrow for, deplore.
welcome.
25B6; noun
both players later expressed regret : REMORSE, sorrow, contrition, contriteness, repentance, penitence, guilt, compunction, remorsefulness, ruefulness.
please give your grandmother my regrets : APOLOGY, apologies; refusal.
they left with genuine regret : SADNESS, sorrow, disappointment, unhappiness, grief.
satisfaction.