Weariest sorts, so to speak (2,2,4)
I believe the answer is:
as it were
'so to speak' is the definition.
(synonyms)
'weariest sorts' is the wordplay.
'sorts' is an anagram indicator (I've seen 'sorted' mean this).
'weariest' is an anagram of 'AS IT WERE'.
(Other definitions for as it were that I've seen before include "In sort of" , "Historically ungrammatical" , "you might say" , "In a kind of way" , "you may say" .)