Initially often overheard pronouncement, say, with a bloomer? (4-1-5)

'initially often overheard pronouncement say with a bloomer?' is the definition.
I can't judge whether this definition defines the answer.

'initially often overheard pronouncement say with a bloomer?' is the wordplay.
'initially' indicates taking the first letters.
'with' is a charade indicator (letters next to each other).
'bloomer?' becomes 'daisy' (daisy is a kind of flowering plant).
The first letters of 'often overheard pronouncement say' is 'oops'.
'oops'+'a'+'daisy'='OOPS-A-DAISY'

Can you help me to learn more?