Crossword Genius

In an unmentionable way? (7)

Ross

I believe the answer is:

tacitly

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

'in' is the definition.
Both the definition and answer are adverbs. Maybe you can see an association between them that I can't see?

'an unmentionable way?' is the wordplay.
I cannot quite see how this works, but
'an' could be 'i' (Roman numeral for one) and 'i' is found within the answer.
'way?' could be 'act' (way is a kind of act) and 'act' is found in the remaining letters.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for tacitly that I've seen before include "Without a word" , "By unexpressed agreement" , "understandably" , "By implication" .)

I've seen this clue in the Evening Standard.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.