Give thanks for bishop? Not so much (5)
I believe the answer is:
bless
'give thanks' is the definition.
(thesaurus)
'bishop? not so much' is the wordplay.
'bishop?' becomes 'B' (chess abbreviation).
'not so much' becomes 'less' (I've seen this in another clue).
'b'+'less'='BLESS'
'for' is the link.
(Other definitions for bless that I've seen before include "Call on God to favour" , "Make holy" , "Isn't that sweet?" , "Pray for" , "Approve of" .)