used /juːzd/adjective 3verb 1forms 2phrases 2 adjective3 •That is or has or have been used.The ground was littered with used syringes left behind by drug abusers. •That has or have previously been owned by someone else.He bought a used car. •In used to. verb1 •In used to. formsmore used · most used Phrases with used get usedTo become accustomed to something; to acclimate; to adjust. used toAccustomed to, tolerant or accepting of.