"spy upon sb" in German to spy upon sb. jdn. bespitzeln abhören nachspionieren jdm. hinterherspionieren Detailed translations for "spy upon sb" to spy upon sb. to spy upon sb.(also: to spy on, to inform on so.) jdn. bespitzeln to spy upon sb.(also: to spy on) abhören to spy upon sb.(also: to spy on) nachspionieren to spy upon sb.(also: to spy on) jdm. hinterherspionieren{transitive verb}