what ‧ so ‧ ev ‧ er S2 /ˌwɒtsəʊˈevə $ ˌwɑːtsoʊˈevər, ˌwʌt-/ BrE AmE adverb
[ Date: 1200-1300 ; Origin: whatso 'whatever' (12-20 centuries) (from what so ) + ever ]
used to emphasize a negative statement SYN whatever :
He’s had no luck whatsoever.
what ‧ so ‧ ev ‧ er S2 /ˌwɒtsəʊˈevə $ ˌwɑːtsoʊˈevər, ˌwʌt-/ BrE AmE adverb
[ Date: 1200-1300 ; Origin: whatso 'whatever' (12-20 centuries) (from what so ) + ever ]
used to emphasize a negative statement SYN whatever :
He’s had no luck whatsoever.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012