Huge male splitting land with you initially (8)
I believe the answer is:
almighty
'huge' is the definition.
(I've seen this before)
'male splitting land with you initially' is the wordplay.
'male' becomes 'm' (common abbreviation).
'splitting' means one lot of letters goes inside another (some letters split a word into two).
'land' becomes 'alight' (alighting is a kind of landing).
'with' is a charade indicator (letters next to each other).
'initially' says to take the initial letters.
The first letter of 'you' is 'y'.
'm' inserted inside 'alight' is 'almight'.
'almight'+'y'='ALMIGHTY'
(Other definitions for almighty that I've seen before include "Supreme" , "Omnipotent; enormous" , "Excessive" , "All-powerful - like God" , "Supremely powerful" .)