He acts in a virtuous way (6)

I believe the answer is:

chaste

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

'in a virtuous way' is the definition.
I can't judge whether this defines the answer.

'he acts' is the wordplay.
'he acts' can be anagrammed to 'CHASTE'.
But, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for chaste that I've seen before include "'Celibate, virginal (6)'" , "Cheats (anag.)" , "Sachet (anag)" , "Refraining from sex" , "Continent" .)

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

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