Helping with alacrity, agree to settle best rent (5,2,6)
I believe the answer is:
eager to please
'helping with alacrity' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'agree to settle best rent' is the wordplay.
'to settle' indicates anagramming the letters (I've seen 'settling' mean this (settle can mean to solve or sort out)).
'best' becomes 'top' (top can mean the very best).
'rent' becomes 'lease' (I've seen this before).
'agree' with letters rearranged gives 'eager'.
'eager'+'top'+'lease'='EAGER TO PLEASE'
Can you help me to learn more?
(Another definition for eager to please that I've seen is " Obliging".)