| Ending | # | Answer | % Correct |
|---|---|---|---|
| -ian | 80 | Australian | Russian | Indian | + 77 more | 97%
|
| -an | 54 | German | Singaporean | South Korean | + 51 more | 97%
|
| -ish | 8 | British | Polish | Swedish | + 5 more | 94%
|
| -ese | 25 | Chinese | Portuguese | Japanese | + 22 more | 94%
|
| -i | 21 | Azerbaijani | Pakistani | Thai | + 18 more | 88%
|
| -ch | 3 | Czech | French | Dutch | 56%
|
| -iot | 1 | Cypriot | 32%
|
| -k | 3 | Greek | Tajik | Uzbek | 32%
|
| -ic | 1 | Icelandic | 29%
|
| -o | 3 | Filipino | Mosotho | Basotho | 21%
|
| -h | 1 | Kazakh | 21%
|
| -er | 4 | Liechtensteiner | Luxembourger | New Zealander | Solomon Islander | 21%
|
| -s | 1 | Swiss | 21%
|
| -ois | 2 | Beninois | Seychellois | 12%
|
| -que | 1 | Monégasque | 12%
|
| -be | 1 | Burkinabe | 9%
|
| -z | 1 | Kyrgyz | 9%
|
| -en | 2 | Turkmen | Nigerien | 9%
|
| -y | 1 | Malagasy | 6%
|
| -e | 1 | Argentine | 3%
|
| -ar | 1 | Kosovar | 3%
|
| -in | 1 | Montenegrin | 3%
|
| -a | 3 | Myanma | Motswana | Batswana | 3%
|
| -u | 1 | Ni-Vanuatu | 3%
|