Regret, n. Grief, concern, sorrow, lamentation, repentance, penitence, self-condemnation; compunction, remorse, contrition.
Ant. Joy, exultation, happiness, delight, self-gratulation, approbation; praise, commendation; felicitation.
Regular. Orderly, methodical; conformable, agreeing; governed, subject; normal; constituted, selected; customary, systematic, stated, established, periodical, recognized, formal, recurrent, certain.
Ant. Unusual, exceptional, rare, irregular, abnormal, eccentric, capricious, variable, uncertain, erratic.
Regulation. Rule, method, principle, precept; adjustment, disposal; arrangement, ordering, disposition, government, control.
Ant. Disorder, anarchy, license, misgovernment, misrule, non-regulation, caprice, maladjustment, derangement.
Rehearse. Recapitulate, detail, recount, describe, tell; narrate, repeat, recite, relate; practice.
Ant. Misrepresent; act, perform, play.
Rejoice. Delight, joy, exult, triumph, please, cheer, exhilarate, gladden, transport, charm, enliven, gratify, make happy.
Ant. Mourn, grieve, weep, lament, pain, distress, defeat, sadden, deaden, vex, annoy, oppress, afflict, trouble, depress, burden, deject.