Home Help Word English Spanish French Russian German Italian Chinese (Trad.) Chinese (Simpl.) Portuguese Arabic Turkish Greek » Definition of " en serio " in Spanish English Dictionary Results en serio {ADV} earnest: in earnest, seriously actuar en serio {V} mean business decir en serio {V} mean business ¡en serio! {INTRJ} kid: no kidding! ¿en serio? {INTRJ} kid: no kid? ¿Lo dice en serio? {INTRJ} kid: Are you kidding?, really? no tomar en serio {V} palter