| euskara | eus-000 |
| isilpeko | |
| English | eng-000 | clandestine |
| English | eng-000 | closet |
| English | eng-000 | confidential |
| English | eng-000 | covert |
| English | eng-000 | furtive |
| English | eng-000 | private |
| English | eng-000 | privileged |
| English | eng-000 | secret |
| English | eng-000 | sneaky |
| English | eng-000 | surreptitious |
| English | eng-000 | underground |
| euskara | eus-000 | ezkutu |
| euskara | eus-000 | ezkutuko |
| euskara | eus-000 | isileko |
| euskara | eus-000 | klandestino |
| euskara | eus-000 | pribatu |
| euskara | eus-000 | sasiko |
| euskara | eus-000 | sekretu |
| euskara | eus-000 | sekretupeko |
| português | por-000 | secreto |