In a way, weariest – put another way ... (2,2,4)
I believe the answer is:
as it were
'in a way' is the definition.
(I've seen this in another clue)
'weariest put another way' is the wordplay.
'put another way' indicates anagramming the letters (letters arranged a different way).
'weariest' with letters rearranged gives 'AS IT WERE'.
(Other definitions for as it were that I've seen before include "Seemingly" , "In sort of" , "you might say" , "In a kind of way" , "In a manner of speaking" .)