Cling  v. (past and past part. Clung) 1 (often foll. By to) adhere. 2 (foll. By to) be unwilling to give up; be emotionally dependent on (a habit, idea, friend, etc.). 3 (often foll. By to) maintain grasp; keep hold; resist separation.  clingy adj. (-ier, -iest). [old english]