Fasten Fasten synonyms fix fasten and fix secure fasten and secure attach fasten and attach affix fasten and affix bind fasten and bind anchor fasten and anchor tie fasten and tie connect fasten and connect hitch fasten and hitch seal fasten and seal Full list of synonyms (2463) Fasten antonyms unfasten fasten and unfasten detach fasten and detach disconnect fasten and disconnect loosen fasten and loosen undo fasten and undo untie fasten and untie loose fasten and loose disjoin fasten and disjoin unlink fasten and unlink open fasten and open Full list of antonyms (67) Share this picture Share this image Share this picture Share this image