intransitive verb clung, clinging cling′·ing

1. to hold fast by or as by embracing, entwining, or sticking; adhere
2. 1. to be or stay near, as if holding fast
   2. to be emotionally attached

Etymology: ME clingen < OE clingan, to adhere, stick together < IE *gel-g- < base *gel-: see climb

adjective, noun