careworn UK /ˈkɛːwɔːn/US /ˈkɛəɹˌwɔɹn/ adjective1 •Worn down by cares: showing the signs of long-term stress, tired and haggard due to prolonged worry.The weeks of working hard to look after his sick family left him looking careworn. formsmore careworn · most careworn