to rear its (ugly) head
01
(of a problem or unpleasant situation) to appear or become noticeable often unexpectedly
![to [rear|raise] its (ugly|) head definition and meaning](https://cdn.langeek.co/photo/46625/original/?type=jpeg "to [rear|raise] its (ugly|) head definition and meaning")
Disapproving
Idiom
Informal
例子
After years of peace, political unrest raised its ugly head in the region, causing concern among the population.
