Why does a burglar burgle?
When I hear surveil on the wireless I often imagine it is spelt surveille, since it is a back-formation from surveillance. But the spelling has settled down as surveil. The Telegraph had a report the other day about someone who found his iPhone had been infected with spyware ‘in order to surveil him’. The word sounds unhappy to my ear, as new back-formations often do, though it has been in use for 60 years. Back-formation appeared in the OED before it had an entry there. Its entry came in the Supplement of 1933, but it was coined by Sir James Murray in 1888 and used by him in the dictionary’s