Any recess regarded as unavoidable (9)

I believe the answer is:

necessary

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

'unavoidable' is the definition.
(thesaurus)

'any recess regarded' is the wordplay.
'any recess' can be anagrammed to 'NECESSARY'.
However, I'm unsure how this is indicated.

'as' is the link.

Can you help me to learn more?

(Other definitions for necessary that I've seen before include "Indispensable, essentional" , "Essential or unavoidable" , "Indespensable, essential" , "Indispensable, essential" , "Essential, needed" .)

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

Want a hint initially instead of a full solution? Install my app