Frighten with errors and bloomers (8)
I believe the answer is:
cowslips
'and bloomers' is the definition.
I can't tell whether this definition defines the answer.
'frighten with errors' is the wordplay.
'frighten' becomes 'cow' (I've seen this in other clues).
'with' means one lot of letters go next to another.
'errors' becomes 'slips' (slip is a kind of error).
'cow'+'slips'='COWSLIPS'
Can you help me to learn more?
(Other definitions for cowslips that I've seen before include "pretty yellow flowers for unsteady bovine" , "Wild yellow flowers for unsteady bovines" .)