Anomalous Tahitian Celt might be an example of this, perhaps? (12)

I believe the answer is:

antithetical

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'an example of this perhaps?' is the definition.
The definition suggests a singular noun but the answer is not.

'anomalous tahitian celt' is the wordplay.
'anomalous' is an anagram indicator.
'tahitian'+'celt'='tahitiancelt'
'tahitiancelt' is an anagram of 'ANTITHETICAL'.

'might be' acts as a link.

Can you help me to learn more?

(Another definition for antithetical that I've seen is " Using the juxtaposition of opposites (rhetoric)".)

I've seen this clue in The Irish Times.

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