How to Say "murky" in Spanish
The most common Spanish word for “murky” is “turbio” — use this word for water that is cloudy or not clear due to sediment or other particles, or for a person's past or business dealings that are suspicious or not entirely honest..
turbio
/TOOR-byoh//ˈtuɾ.βjo/

Examples
El agua del río está muy turbia después de la lluvia.
The river water is very murky after the rain.
No bebas ese vino, se ve un poco turbio.
Don't drink that wine; it looks a bit cloudy.
Sus ojos se volvieron turbios por el cansancio.
Their eyes became cloudy from tiredness.
Ese hombre tiene un pasado un poco turbio.
That man has a somewhat murky past.
Matching the Noun
Remember to change the ending to 'turbia' if you are describing a feminine word like 'el agua' (which is feminine even though it uses 'el') or 'la vista'.
Using 'Estar' for Temporary States
We usually use 'estar' with this word because being cloudy or murky is often a temporary condition, like 'El cristal está turbio' (The glass is cloudy).
Using 'Ser' for Character
When describing a person's character or a business's reputation as permanently shady, use 'ser' (e.g., 'Es un tipo turbio').
Turbio vs. Sucio
Mistake: “Using 'turbio' for a dirty floor.”
Correction: Use 'sucio' for dirt on a surface. Use 'turbio' for things that should be see-through but aren't (like water, air, or glass).
Overusing 'Sospechoso'
Mistake: “Always using 'sospechoso' for everything bad.”
Correction: Try using 'turbio' when something feels 'hidden' or 'messy'—it sounds more like a native speaker.
oscuros
/os-KU-ros//osˈku.ɾos/

Examples
Los detalles de su pasado permanecen oscuros.
The details of his past remain obscure/hidden.
Tienen intereses oscuros en ese negocio.
They have shady/hidden interests in that business.
Figurative Use
When used figuratively, 'oscuros' describes abstract things like feelings, intentions, or histories, meaning they are unclear, hidden, or morally questionable.
tenebroso
/te-ne-BRO-so//teneˈβɾoso/

Examples
El detective descubrió un secreto tenebroso en la familia.
The detective discovered a sinister secret in the family.
No confío en ese hombre; tiene una mirada tenebrosa.
I don't trust that man; he has a sinister look.
Hay aspectos tenebrosos en la historia de esa empresa.
There are murky aspects in that company's history.
Abstract Use
When used for ideas or history, it implies that someone is hiding something bad or evil.
Don't use for 'Cloudy'
Mistake: “Saying 'un día tenebroso' for a gray, rainy day.”
Correction: Use 'nublado' or 'gris'. 'Tenebroso' implies it is dangerously dark or evil.
Distinguishing 'turbio' from 'oscuros' and 'tenebroso'
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