Synonyms for rein Updated: 06-05-2026 by Wikilanguages.net share facebook share twitter Some common synonyms of rein are: rein [v. a.] Check, restrain, control, curb, bridle, hold. All 🔎︎ Synonyms of reinrein [v. a.] Check, restrain, control, curb, bridle, hold. Read More about: rein