Crossword Genius

Put in a word for the working classes (11)

Ross

I think it could be either:

proletarian

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

'put in' is the definition.
Both the definition and answer are adjectives. Perhaps you can see an association between them that I don't see?

'a word for the working classes' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is found within the answer.
'for' could be 'pro' (as in being 'pro' or in favour of something) and 'pro' is located in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for proletarian that I've seen before include "Relating to the workers" , "Ordinary worker (Marxism)" , "Characteristic of the working class" , "Working-class" .)

I've seen this clue in The Globe and Mail and The Irish Independent.
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