| Traduções principais |
| dubious adj | (suspicious) | duvidoso, suspeito adj |
| | The dubious package was found by the door this morning. |
| | O pacote duvidoso foi encontrado ao lado da porta esta manhã. |
| iffy adj | informal (not certain) | duvidoso, incerto adj |
| | Mark feels iffy about driving at night without his glasses. |
| unconvincing adj | (not realistic or believable) | não convincente loc adj |
| | | dúbio, duvidoso adj |
| | Nobody believed Edward's unconvincing explanation of what had happened. |
| shady adj | figurative, informal (disreputable) | duvidoso, suspeito adj |
| | Adam went to that shady club in town last night. |
| | Adam foi naquele clube suspeito na cidade noite passada. |
| unreliable adj | (can't depend on) | duvidoso adj |
| | The thermostat on this oven is unreliable; sometimes the food comes out perfectly cooked, but other times it's burnt or undercooked. |
| | O termostato nesse forno é duvidoso; às vezes a comida sai perfeitamente cozida, mas outras vezes fica queimada ou mal cozida. |
| flaky adj | informal, figurative (person: unreliable) | não confiável adj |
| | | duvidoso adj |
| | | inconstante adj |
| | (figurado) | volátil, volúvel adj |
| | I wouldn't employ her. She's too flaky. |
| | Eu não a empregaria. Ela não é confiável. |
| untrustworthy adj | (speech, text: not reliable) (fala, texto) | duvidoso adj |
| | Don't use untrustworthy translations like these in your research. |
| uncertain adj | (situation: not assured) | incerto, duvidoso adj |
| | The food situation remains uncertain: more aid will probably be needed. |
| | A situação da comida permanece incerta: mais ajuda provavelmente será necessária. |
| iffy adj | informal (questionable) (questionável) | duvidoso, suspeito adj |
| | Those numbers are iffy. Are you sure you included all the expenses? |
| sketchy adj | US, slang (questionable, suspicious) | suspeito, suspeitoso, duvidoso adj |
| | Be careful if you have to go through any sketchy areas of the city. |
checkered (US),
chequered (UK) adj | figurative (past: varied, questionable) | duvidoso adj |
| | | suspeito adj |
| | The public is wary of the new governor's checkered past. |
| doubtful adj | (dubious) | duvidoso adj |
| | This painting is of doubtful authenticity. |
| | Trata-se de uma pintura cuja autenticidade é duvidosa. |
| doubtful adj | (uncertain) | duvidoso, incerto adj |
| | Now that she has lost her job, Linda is facing a doubtful future. |
| | Agora que perdeu o emprego, Linda está diante de um futuro incerto. |