Grade 3 tighten Get Printable Handwriting (tight-en) 2 syllables Learn It! Spelling Test Definition adjective. 1 to make snug or trim or close in fit or timing 2 to fastened or shut in a secure way Example Sentence Bill had to tighten his belt. Synonyms bind; constrict; fasten; make snug Antonyms loosen Share with your friends: