How to Say "slack" in Spanish
The Spanish word for “slack” is “flojo” — A2 level. This is a very common word in everyday Spanish.

Examples
Este tornillo está flojo, necesito un destornillador.
This screw is loose; I need a screwdriver.
Me gusta usar pantalones flojos cuando estoy en casa.
I like wearing baggy pants when I'm at home.
La cuerda está muy floja; tienes que tensarla.
The rope is very slack; you have to tighten it.
Describing State
When talking about objects being loose (like a screw or a rope), we almost always use the verb 'estar' because it describes a current state or condition.
Flojo vs. Suelto
Mistake: “Mi perro está flojo en el jardín.”
Correction: Use 'suelto' for 'loose' as in 'free/untied'. Use 'flojo' for things that are slack or not tight enough.
Related Translations
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.