Daisy precursor elevated an affirmative return (5)
I believe the answer is:
upsey
'daisy precursor' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'elevated an affirmative return' is the wordplay.
'elevated' becomes 'up' (I've seen this in other clues).
'an affirmative' becomes 'yes' (affirmative answer word).
'return' shows that the letters should be reversed in order.
'yes' backwards is 'sey'.
'up'+'sey'='UPSEY'
Can you help me to learn more?
(Another definition for upsey that I've seen is " as in the past".)