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
Fundamentalist extremism has been raising its head all around the world over the last couple years.
After years of peace, political unrest raised its ugly head in the region, causing concern among the population.
