Charlie in optimism brought round big date (5)
I believe the answer is:
epoch
'big date' is the definition.
'epoch' can be an answer for 'date' (I've seen this before). I'm not sure about the 'big' bit.
'charlie in optimism brought round' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' is an insertion indicator.
'optimism' becomes 'hope' (I've seen this in another clue).
'brought round' says the letters should be written backwards.
'c' put into 'hope' is 'hcope'.
'hcope' in reverse letter order is 'EPOCH'.
Can you help me to learn more?
(Other definitions for epoch that I've seen before include "Age, time span" , "Sure date" , "Historical age" , "remarkable time" , "Making this date" .)
