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to wail
to cry out loudly and mournfully, often expressing grief, pain, or intense sorrow- howl, roar, ululate, yaup, yawl
to bewail
to express deep sorrow or grief, often accompanied by loud cries or mournful sounds- bemoan, deplore, lament
to atone
(religious) to make up for a sin by feeling sorry, asking for forgiveness, and trying to do better- repent
to rue
to feel regret or sorrow for something- regret, repent
to lament
to verbally express deep sadness over a loss or unfortunate situation- keen
to bemoan
to express great regret or sorrow for something- bewail, deplore, lament
to recant
to withdraw or take back a statement, belief, or opinion, especially publicly- abjure, forswear, resile, retract
to despair
to fail to keep hope>< hope
to deplore
to feel deep and sincere regret or sadness about a situation, event, or outcome- bemoan, bewail, lament
to sob
to cry loudly while making repeated, short gasping sounds, often due to intense emotions such as sadness or grief
to despond
to feel extremely discouraged, disheartened, or in low spirits
contrite
expressing or experiencing deep regret or guilt because of a wrong act that one has committed- remorseful, rueful, ruthful