| Family | Population | Answer | % Correct | |
|---|---|---|---|---|
| Germanic | United Kingdom | 380M | English | 97%
|
| Romance | France | 74M | French | 97%
|
| Celtic | Ireland | 170k | Irish | 97%
|
| Romance | Spain | 486M | Spanish | 97%
|
| Germanic | Germany | 76M | Standard German | 97%
|
| Germanic | Sweden | 10M | Swedish | 97%
|
| Germanic | Switzerland | 6.5M | Swiss German | 97%
|
| Uralic | Finland | 5.0M | Finnish | 96%
|
| Other IE | Greece | 13.1M | Greek | 96%
|
| Romance | Portugal | 236M | Portuguese | 96%
|
| Slavic | Russia | 148M | Russian | 96%
|
| Germanic | Netherlands | 24M | Dutch | 95%
|
| Romance | Italy | 64M | Italian | 95%
|
| Germanic | Norway | 5.4M | Norwegian | 95%
|
| Slavic | Poland | 40M | Polish | 95%
|
| Celtic | United Kingdom | 550k | Welsh | 95%
|
| Slavic | Croatia | 5.5M | Croatian | 94%
|
| Baltic | Lithuania | 2.8M | Lithuanian | 94%
|
| Slavic | Serbia | 10M | Serbian | 94%
|
| Slavic | Ukraine | 33M | Ukrainian | 94%
|
| Other IE | Italy | 100k | Arbëreshë Albanian | 93%
|
| Turkic | Turkey | 460k | Balkan Gagauz Turkish | 93%
|
| Indo-Aryan | Serbia | 630k | Balkan Romani | 93%
|
| Indo-Aryan | Slovakia | 180k | Carpathian Romani | 93%
|
| Slavic | Czechia | 11M | Czech | 93%
|
| Germanic | Denmark | 5.6M | Danish | 93%
|
| Other IE | Albania | 4.9M | Gheg Albanian | 93%
|
| Germanic | Iceland | 330k | Icelandic | 93%
|
| Indo-Aryan | Germany | 220k | Sinte Romani | 93%
|
| Uralic | Estonia | 1.0M | Standard Estonian | 93%
|
| Baltic | Latvia | 1.6M | Standard Latvian | 93%
|
| Other IE | Albania | 1.3M | Tosk Albanian | 93%
|
| Turkic | Turkey | 84M | Turkish | 93%
|
| Indo-Aryan | Romania | 600k | Vlax Romani | 93%
|
| Slavic | Belarus | 1.4M | Belarusian | 92%
|
| Slavic | Bosnia and Herzegovina | 2.7M | Bosnian | 92%
|
| Slavic | Bulgaria | 6.7M | Bulgarian | 92%
|
| Romance | Spain | 4.2M | Catalan | 92%
|
| Slavic | Slovakia | 5.4M | Slovak | 92%
|
| Slavic | Slovenia | 2.1M | Slovene | 92%
|
| Uralic | Hungary | 12M | Hungarian | 91%
|
| Romance | Romania | 25M | Romanian | 91%
|
| Romance | Italy | 4.7M | Sicilian | 90%
|
| Isolate | Spain | 730k | Basque | 89%
|
| Slavic | North Macedonia | 1.6M | Macedonian | 89%
|
| Semitic | Malta | 570k | Maltese | 86%
|
| Romance | France | 120k | Corsican | 85%
|
| Romance | Italy | 500k | Campidanese Sardinian | 83%
|
| Romance | Spain | 3.1M | Galician | 83%
|
| Romance | Italy | 100k | Gallurese Sardinian | 83%
|
| Romance | Italy | 500k | Logudorese Sardinian | 83%
|
| Slavic | Montenegro | 270k | Montenegrin | 83%
|
| Romance | Italy | 100k | Sassarese Sardinian | 83%
|
| Celtic | France | 210k | Breton | 78%
|
| Germanic | Austria | 15M | Bavarian | 77%
|
| Turkic | Russia | 4.0M | Tatar | 75%
|
| Germanic | Luxembourg | 440k | Luxembourgish | 73%
|
| Germanic | Netherlands | 720k | Frisian | 72%
|
| Romance | France | 1.1M | Occitan | 72%
|
| Romance | Italy | 3.9M | Venetian | 71%
|
| NE Caucasian | Russia | 1.8M | Chechen | 70%
|
| Romance | Italy | 5.7M | Napoletano-Calabrese | 63%
|
| Romance | Italy | 3.9M | Lombard | 62%
|
| Iranian | Russia | 500k | Ossetic | 59%
|
| Germanic | Germany | 2.0M | Upper Saxon | 58%
|
| Slavic | Poland | 470k | Silesian | 56%
|
| Romance | Belgium | 600k | Walloon | 55%
|
| Turkic | Ukraine | 590k | Crimean Tatar | 54%
|
| Romance | Italy | 150k | Ligurian | 54%
|
| Romance | Spain | 260k | Asturian | 51%
|
| Romance | Italy | 700k | Piedmontese | 49%
|
| Turkic | Russia | 1.2M | Bashkort | 47%
|
| NW Caucasian | Russia | 630k | Adyghe | 46%
|
| Turkic | Russia | 740k | Chuvash | 44%
|
| Mongolic | Russia | 500k | Kalmyk-Oirat | 43%
|
| Germanic | Netherlands | 1.3M | Limburgish | 43%
|
| Turkic | Moldova | 200k | Gagauz | 42%
|
| Romance | Italy | 600k | Friulian | 41%
|
| Uralic | Russia | 270k | Udmurt | 41%
|
| Uralic | Russia | 270k | Meadow Mari | 40%
|
| Uralic | Russia | 110k | Komi-Zyrian | 37%
|
| Romance | Spain | 200k | Extremaduran | 36%
|
| NE Caucasian | Russia | 350k | Ingush | 36%
|
| Romance | France | 700k | Picard | 35%
|
| Romance | North Macedonia | 210k | Aromanian | 34%
|
| Romance | Italy | 440k | Emilian | 33%
|
| NE Caucasian | Russia | 700k | Avar | 32%
|
| NW Caucasian | Russia | 1.9M | Kabardian | 32%
|
| Germanic | Israel | 420k | Eastern Yiddish | 30%
|
| Turkic | Russia | 280k | Karachay-Balkar | 28%
|
| Romance | France | 160k | Arpitan | 25%
|
| Germanic | Netherlands | 260k | Gronings | 22%
|
| Germanic | Netherlands | 210k | Achterhoeks | 21%
|
| Germanic | Netherlands | 260k | Drents | 21%
|
| Uralic | Russia | 240k | Erzya | 21%
|
| Baltic | Latvia | 200k | Latgalian | 21%
|
| Germanic | Netherlands | 330k | Twents | 21%
|
| Romance | Italy | 160k | Romagnol | 20%
|
| Germanic | Germany | 200k | East Frisian Low Saxon | 19%
|
| Germanic | Germany | 300k | Low Saxon | 19%
|
| Germanic | Netherlands | 350k | Sallands | 19%
|
| Germanic | Netherlands | 180k | Veluws | 19%
|
| NE Caucasian | Russia | 520k | Lezgi | 15%
|
| Germanic | Belgium | 1.2M | West Flemish | 15%
|
| Germanic | Germany | 400k | Palatinate Franconian | 14%
|
| Baltic | Lithuania | 500k | Samogitian | 14%
|
| Germanic | Germany | 250k | Ripuarian | 13%
|
| Turkic | Russia | 400k | Kumyk | 12%
|
| Germanic | Netherlands | 100k | Zeeuws | 9%
|
| NE Caucasian | Russia | 370k | Dargwa | 8%
|
| Mixed | Spain | 460k | Caló | 5%
|