Princeton's WordNet

1. know-it-all, know-all(noun)

   someone who thinks he knows everything and refuses to accept advice or information from others

Webster Dictionary

1. Know-all(noun)

   one who knows everything; hence, one who makes pretension to great knowledge; a wiseacre; -- usually ironical

• alwetende, beterweterigAfrikaans
• المُدَّعي بِمَعْرِفَة كُل شيءArabic
• всезнайкоBulgarian
• sabichãoPortuguese (BR)
• vševědCzech
• der BesserwisserGerman
• bedrevidende; blærerøvDanish
• παντογνώστης, πολύξερος, «ξερόλας»Greek
• sabelotodo, sabihondoSpanish
• kõiketeadjaEstonian
• علامه دهرFarsi
• viisastelijaFinnish
• un(e) je-sais-toutFrench
• מִתייַמֵר לָדַעַת הַכָּלHebrew
• सब कुछ जानने वालाHindi
• sveznalicaCroatian
• nagy„okos”Hungarian
• sok tahuIndonesian
• maður sem þykist allt vitaIcelandic
• sapientoneItalian
• 知ったかぶりJapanese
• 아는 체하는 사람Korean
• visažinisLithuanian
• viszinisLatvian
• serba tahuMalay
• wijsneusDutch
• bedreviter, viktigperNorwegian
• mądralaPolish
• از نادانى به كسى عام فهم خطاب كردنPersian
• ټول پوهه،Pashto
• sabichãoPortuguese
• atot­ştiu­torRomanian
• всезнайкаRussian
• vševedSlovak
• vseznalecSlovenian
• sveznalicaSerbian
• besserwisserSwedish
• ผู้ที่อ้างว่ารู้ทุกอย่างดีกว่าผู้อื่นThai
• çok bilmiş kimse, ukalâTurkish
• 自稱無所不知的人Chinese (Trad.)
• всезнайкоUkrainian
• بوجھ بجھکّڑUrdu
• người tự cho mình biết mọi thứVietnamese
• 自称无所不知的人Chinese (Simp.)