unclear
US /ʌnˈklɪr/
UK /ʌnˈklɪr/

1.
pouco claro, obscuro
not easy to understand or be sure about
:
•
The instructions were unclear, so I didn't know how to assemble it.
As instruções eram pouco claras, então eu não sabia como montá-lo.
•
His motives for doing that remain unclear.
Seus motivos para fazer isso permanecem obscuros.
2.
turvo, opaco
not transparent or easy to see through
:
•
The water in the pond was unclear after the heavy rain.
A água do lago estava turva depois da chuva forte.
•
The old window panes were so unclear that it was hard to see outside.
Os vidros antigos estavam tão opacos que era difícil ver para fora.