scot-free /ˌskɒt ˈfriː $ ˌskɑːt-/ BrE AmE adverb
[ Date: 1200-1300 ; Origin: scot 'tax' (13-19 centuries) , from Old Norse skot 'shot, payment' ]
get away/off scot-free informal to avoid being punished although you deserve to be
scot-free /ˌskɒt ˈfriː $ ˌskɑːt-/ BrE AmE adverb
[ Date: 1200-1300 ; Origin: scot 'tax' (13-19 centuries) , from Old Norse skot 'shot, payment' ]
get away/off scot-free informal to avoid being punished although you deserve to be
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012