Crossword Genius

A scare, perhaps, for an ancient Roman (6)

Ross

I believe the answer is:

caesar

I'm a little stuck... Click here to teach me more about this clue!

'an ancient roman' is the definition.
'Caesar' can be an answer for 'roman' (Caesar is an example). I'm unsure of the 'an ancient' bit.

'a scare perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'a'+'scare'='ascare'
'ascare' is an anagram of 'CAESAR'.

'for' is the link.

Can you help me to learn more?

(Other definitions for caesar that I've seen before include "See 12" , "He was killed during the Ides of March" , "Roman ruler" , "extraction operation" , "US comedian" .)

I've seen this clue in the Evening Standard.
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