Make a hasty start in a moment, more than twice (6)
I believe the answer is:
thrice
'make a hasty start in a moment more than twice' is the definition.
I can't judge whether this defines the answer.
'in a moment more than twice' is the wordplay.
'in' is an insertion indicator.
'a moment' becomes 'trice' (I've seen this before).
'more than twice' becomes 'h' (I can't justify this - if you can you should believe this answer much more).
'trice' going around 'h' is 'THRICE'.
Can you help me to learn more?
(Other definitions for thrice that I've seen before include "On three occasions" , "Three-time" , "Several times" , "Old usage for three times" , "In threefold degree" .)