The complaint raised, left with hesitation and weaker (7)
I believe the answer is:
feebler
'weaker' is the definition.
(I've seen this before)
'the complaint raised left with hesitation' is the wordplay.
'the complaint' becomes 'beef' (beef can mean a complaint or objection).
'raised' says the letters should be written in reverse (going up in a down clue).
'left with' becomes 'l' (common abbreviation. I am not sure about the 'with' bit.).
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'beef' reversed gives 'feeb'.
'feeb'+'l'+'er'='FEEBLER'
'and' is the link.
Can you help me to learn more?
(Another definition for feebler that I've seen is " Weaker".)