Reckoned trade has become unsteady (5)

I believe the answer is:

rated

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

'reckoned' is the definition.
(I've seen this in other clues)

'trade has become unsteady' is the wordplay.
'trade' can be anagrammed to 'RATED'.
Though, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for rated that I've seen before include "Taxed" , "Considered" , "Tread (anag.)" , "Censured" , "given a dressing-down" .)

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

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