Supplies the same in every way? (6)
I believe the answer is:
endows
'supplies' is the definition.
'the same in every way?' is the wordplay.
'the same' becomes 'do'.
'in' means one lot of letters goes inside another.
'every way?' becomes 'enws' (compass directions).
'do' inserted inside 'enws' is 'ENDOWS'.
(Other definitions for endows that I've seen before include "Provides with income, being snowed under" , "Bequeaths" , "Provides a source of income for" , "Wed son (anag.)" , "Furnishes with funds" .)