Mostly split, and split again in deluge (7)
I believe the answer is:
torrent
'deluge' is the definition.
(synonyms)
'mostly split and split again in' is the wordplay.
'mostly split' becomes 'tort' (I can't justify this - if you can you should believe this answer much more).
'and' becomes 'n' (common abbreviation for 'and').
'split' means one lot of letters goes inside another (some letters split a word into two).
'again' becomes 're' (prefix meaning 'again').
'in' means one lot of letters goes inside another.
'tort' enclosing 'n' is 'tornt'.
'tornt' going around 're' is 'TORRENT'.
Can you help me to learn more?
(Other definitions for torrent that I've seen before include "Fast-moving stream" , "Inundation" , "Turbulent flow" , "Rush of water" , "Violently fast stream of water" .)
