pound, contract, tense up, flare (one's nostrils), bristle, fume, smolder, churn, froth, glare, burn, boil, resent, seethe, prickle, overreact, roil, glower, steam, simmer, brim, stew, be hot under the collar, tighten (lips/shoulders)

apologize, beg (forgiveness), confess, implore, plead (forgiveness), pray for (forgiveness), beseech, entreat, express (regret), express one's regret, make amends, ask for (forgiveness), feel regret, admit (to wrongdoing), make the first move

elevate, settle, clear, overlook, reframe, let go, reconcile, rethink, mend, come around, excuse, redress, acknowledge, waive, exonerate, absolve, pardon, vindicate, patch up, forgive, grant (forgiveness), open to (someone), look over (someone's faults), ease up, clear (one's name), repair (a relationship), soften (toward someone), allow (others their shortcomings), restart (a relationship)

fix, compromise, sort out, manage to, reconcile, correct, mend, resolve, amend, redress, rectify, make up for, remedy, make good, aspire to, reassure, patch up, track down, settle (a dispute), appeal to, set right, right (a wrong), compensate (for), make amends, repair (a ruptured relationship), right a wrong, straighten someone out, find a solution to, behave with awareness, put right, redeem (one's trustworthiness), regain someone's trust

breathe, release, open up, diminish, greet, empathize, loosen up, thaw, unwind, back off, show compassion, soften (one's stance), relax (one's judgments), wish (someone well), view someone (in a better light), see someone (with fresh eyes), appreciate (someone's good qualities), concern oneself with (another's well-being), ease up/off, temper (one's judgments with understanding), lighten (up), throw open (one's arms), open (one's heart/a door), initiate (contact), extend oneself, face someone, take in (someone's good qualities), warm up toward (someone), mellow