| nynorsk | nno-000 |
| hardnakka | |
| Deutsch | deu-000 | hartnäckig |
| English | eng-000 | adamantine |
| English | eng-000 | besetting |
| English | eng-000 | bulldog |
| English | eng-000 | confirmed |
| English | eng-000 | do-or-die |
| English | eng-000 | dogged |
| English | eng-000 | doggedly |
| English | eng-000 | insistent |
| English | eng-000 | intractable |
| English | eng-000 | obstinate |
| English | eng-000 | obstinately |
| English | eng-000 | persevering |
| English | eng-000 | persistent |
| English | eng-000 | pertinacious |
| English | eng-000 | pertinaciously |
| English | eng-000 | refractory |
| English | eng-000 | stiff-necked |
| English | eng-000 | strongheaded |
| English | eng-000 | stubborn |
| English | eng-000 | stubbornly |
| English | eng-000 | tenacious |
| English | eng-000 | tough |
| français | fra-000 | acharné |
| français | fra-000 | acharnée |
| français | fra-000 | farouchement |
| français | fra-000 | mordicus |
| français | fra-000 | obstiné |
| français | fra-000 | obstinée |
| français | fra-000 | opiniâtre |
| français | fra-000 | tenace |
| latine | lat-000 | persisto |
| bokmål | nob-000 | hardnakka |
| bokmål | nob-000 | hardnakket |
| svenska | swe-000 | hårdnackad |