I'll see your nincompoop and raise you:
Armenian: հիմար (hy) (himar), ապուշ (hy) (apuš), տխմար (hy) (txmar)
Catalan: ximple (ca), bovo (ca), babau (ca), tonto (ca), fava (ca), panoli (ca), beneit (ca), imbècil (ca), idiota (ca), estúpid (ca)
Croatian: idiot (hr) m., glupan (hr) m., glupko (hr) m., nesposobnjaković (hr) m.
Danish: fjols, skvadderhoved, idiot, knallert
Dutch: lomperd, domoor, stommeling, oetlul
Finnish: tollo (fi), tolvana (fi), tohelo (fi)
French: crétin (fr), abruti (fr), demeuré (fr), cornichon (fr), gourde (fr), imbécile (fr), simplet (fr), débile (fr), niais (fr), nigaud (fr), dadais (fr), sot (fr), ravi (fr), benêt (fr), cloche (fr), con (fr), connard (fr), mal cuit (fr), démoulé trop tôt (fr), bercé trop près du mur (fr)
German: Dummkopf (de) m., Einfaltspinsel (de) m., Trottel (de) m.
Icelandic: beinasni (is) m., fábjáni (is) m., einfeldningur (is) m., fáviti (is) m., fífl (is) n.
Italian: cretino (it), imbecille (it), stupido (it), idiota (it), coglione (it)
Japanese: あんぽんたん, うすらとんかち, おたんちん
Norwegian: tullebukk (no) m.
Polish: głupiec (pl)
Russian: дурачок (ru)
Spanish: bobo (es), soso (es), sosaina (es), tonto (es), memo (es), panoli (es), lila (es), pavitonto (es), pasmarote (es), bendito (es), majadero (es), papanatas (es), primo (es), Juan Lanas (es), imbécil (es), gilipollas (es)
Swedish: idiot, pucko, dumhuvud, dumbom, flane, fjompa, störding, nöt
