Hardly fooled by (4)
I believe the answer is:
onto
(Other definitions for onto that I've seen before include "To a place on" , "In dispute over" , "Rumbling" , "To the whole of (maths.)" , "In contact with - aware of" .)
I believe the answer is:
onto
(Other definitions for onto that I've seen before include "To a place on" , "In dispute over" , "Rumbling" , "To the whole of (maths.)" , "In contact with - aware of" .)