needs
adv (arch or rhet 古或修辭) (used only with must, often indicating sarcasm 只與must連用, 常含譏諷之意)
1 of necessity; from a sense of personal obligation 必要地; 偏要; 偏偏; 非得
He must needs break a leg just before we go on holiday, ie It was a foolish action causing great inconvenience. 我們正要去度假, 他卻偏偏摔斷了腿.
2 (idm 習語) ,needs ,must when the ,devil `drives (saying 諺) one is sometimes forced by circumstances to do what one does not want to do 情勢所迫, 只得去做.