to  rear its (ugly) head
<abbr style="text-decoration: underline;" title="rear / raise" > rear</abbr>
rɪə
rie
its
ɪts
its
(ugly)
(ʌgli)
agli
head
hɛd
hed

Definition & Meaning of "rear its (ugly) head"in English

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
Disapproving
Idiom
Informal

What is the origin of the idiom "rear its head" and when to use it?

The idiom "rear its head" is associated with problems, issues, or negative situations reemerging or becoming noticeable again after a period of being hidden or dormant. It is commonly used in the context of challenges or difficulties resurfacing.

Examples
The old problem reared its ugly head during the final stage of the project. 
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