Crossword Genius

In Christian Union teach odd chaps — this convert is still learning (10)

Ross

I believe the answer is:

catechumen

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'this convert is still learning' is the definition.
'catechumen' can be an answer for 'convert' (thesaurus). I'm not sure about the remainder of the definition.

'in christian union teach odd chaps' is the wordplay.
'in' means one lot of letters goes inside another.
'christian union' becomes 'cu' (this could be a standard abbreviation of which I'm unaware).
'odd' indicates an anagram.
'chaps' becomes 'men' (I've seen this before).
'teach' is an anagram of 'atech'.
'cu' placed around 'atech' is 'catechu'.
'catechu'+'men'='CATECHUMEN'

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I've seen this clue in The Guardian.
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