Crossword Genius

One kept - in suspense? (9)

Ross

I think it could be either:

dependent

dependant

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

'in suspense?' is the definition.
Both the answer and definition are adjectives. Perhaps there's a link between them I don't understand?

'one kept' is the wordplay.
I cannot really understand how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is found within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for dependant that I've seen before include "Dented pan? (anag)" , "Subject to" , "Protg" , "Client" , "Child maybe" .)

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