From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
gulled /ɡˈʌld/
hereingelegt, reingelegt, hinters Licht geführt, übertölpelt, düpiert, angeschmiert, betakelt, belackmeiert
Synonyms: duped, hoodwinked, conned, taken in, put one over
see: dupe sb., hoodwink sb., gull sb., con sb., take in sb., put one over on sb., duping, hoodwinking, gulling, conning, taking in, putting one over