fortuitous

英 [fɔː'tjuːɪtəs] 美[fɔr'tuɪtəs]

• adj. 偶然的，意外的；幸运的

1. having no cause or apparent cause;

"a causeless miracle"

"fortuitous encounters--strange accidents of fortune"

"we cannot regard artistic invention as...uncaused and unrelated to the times"

2. occurring by happy chance;

"profits were enhanced by a fortuitous drop in the cost of raw materials"