• adj. 无常的；短暂的；易逃逸的

来自fugitive, 逃跑的，逃避的。

fugacious (adj.)

"fleeing, likely to flee," 1630s, with -ous + Latin fugaci-, stem of fugax "apt to flee, timid, shy," figuratively "transitory, fleeting," from fugere "to flee" (see fugitive). Related: Fugaciously; fugaciousness; fugacity.