painful/ 'peɪnful /

1.adjective [+back] [ joint] [ swelling etc] 
(physically) 疼痛的

2.adjective [+treatment] [ blow] [ spasm etc] 
痛苦的

3.adjective [+memory] [ decision] [ situation] [ sight] 
(upsetting,unpleasant) 讨厌的

4.adjective [+performance] [ interview] 
(embarrassing) 令人难堪的