Not fooled by (6)
(Other definitions for onto that I've seen before include "To a place on" , "forward, with a destination" , "To the whole of (maths.)" , "In contact with - aware of" , "(Moving) aboard" .)
(Other definitions for onto that I've seen before include "To a place on" , "forward, with a destination" , "To the whole of (maths.)" , "In contact with - aware of" , "(Moving) aboard" .)