Bound to be glad I came round (9)

I believe the answer is:

obligated

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'bound' is the definition.
(similar in meaning)

'to be glad i came round' is the wordplay.
'to be glad i' anagrams to 'OBLIGATED'.
But, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for obligated that I've seen before include "in debt" , "Bound" , "Morally compelled" .)

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

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