Slight forgotten gladly by recipient ultimately (5)
I believe the answer is:
faint
'slight' is the definition.
(thesaurus)
'gladly by recipient ultimately' is the wordplay.
'gladly' becomes 'fain' (I've seen this in another clue).
'by' is a charade indicator (letters next to each other).
'ultimately' suggests the final letters.
The last letter of 'recipient' is 't'.
'fain'+'t'='FAINT'
'forgotten' is the link.
This may not be correct. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for faint that I've seen before include "woozy" , "feeble" , "Lacking clarity" , "Hard to see" , "hard to hear" .)