Synonyms of the word

regretful

• adj. Full of feelings of regret, indulging in regrets.
• adj. Sorrowful about what has been lost or done.

bad

• adj. Not good; unfavorable; negative.
• adj. Not suitable or fitting.
• adj. Seemingly non-appropriate, in manners, etc.
• adj. Unhealthy.
• adj. Tricky; stressful; unpleasant.
• adj. Evil; wicked.
• adj. Faulty; not functional.
• adj. (of food) Spoiled, rotten, overripe.
• adj. (of breath) Malodorous, foul.
• adj. (informal) Bold and daring.
• adj. (hip-hop slang) good, superlative.
• adj. (of a need or want) Severe, urgent.
• adv. (now colloquial) Badly.
• n. (slang) Error, mistake.
• n. (countable, uncountable, economics) An item (or kind of item) of merchandise with negative value; an unwanted…
• adj. (slang) Fantastic.
• v. (archaic) Alternative past tense of bid. See bade.
• v. (Britain, dialect, transitive) To shell (a walnut).

penitent

• adj. Feeling pain or sorrow on account of sins or offenses; repentant; contrite; sincerely affected by a sense…
• adj. Doing penance.
• n. One who repents of sin; one sorrowful on account of his or her transgressions.
• n. One under church censure, but admitted to penance; one undergoing penance.
• n. One under the direction of a confessor.

repentant

• adj. Feeling or showing sorrow for wrongdoing.
• n. One who repents; a penitent.

sorry

• adj. (of a person) Regretful for an action; grieved or saddened, especially by the loss of something or someone.
• adj. Poor, sad or regrettable.
• interj. Expresses regret, remorse, or sorrow.
• interj. Used as a request for someone to repeat something not heard or understood clearly.
• interj. Used to correct oneself in speech.
• n. The act of saying sorry; an apology.