Crossword Genius

Action works both ways (4)

Ross

I believe the answer is:

deed

I believe this is a triple definition!

'action' is the first definition.
(deed is a kind of action)

'works' is the second definition.
(thesaurus)

'both ways' is the third definition.

(Other definitions for deed that I've seen before include "Act - exploit - legal document" , "Heroic exploit" , "What's done" , "A conscious action" , "documentary evidence" .)

I've seen this clue in The Mirror.
Want a hint initially instead of a full solution? Install my app