portend
v.
early 15c., from Latin portendere "foretell, reveal; point out, indicate," originally "to stretch forward," from por- (variant of pro-; see pro-) "forth, forward" + tendere "to stretch, extend" (see tenet). Related: Portended; portending.
〔蒋〕[por-=pro-前，tend伸;’伸到前面”→出现在前面，(某种情况或事物)出现在…之前] 预示，预兆，作为…的兆头