How to Say "hiss" in Spanish
The Spanish word for “hiss” is “fu” — B1 level.

Examples
El gato me hizo fu cuando intenté acariciarlo.
The cat hissed at me when I tried to pet it.
¿Te gustó la cena? —Psé, ni fu ni fa.
Did you like the dinner? —Eh, it was just okay / nothing special.
Esa película me dejó ni fu ni fa; no fue tan buena como decían.
That movie was neither here nor there for me; it wasn't as good as they said.
A Sound Word
This word is an 'interjection,' which means it's a sound used to express a feeling or imitate a noise. It doesn't change its form based on who is talking.
The Power of 'Ni'
When you see 'fu' in the phrase 'ni fu ni fa,' the word 'ni' works like 'neither' or 'nor' in English to show that something doesn't fit into either category.
Using 'Fu' Alone
Mistake: “La comida estaba fu.”
Correction: La comida estaba ni fu ni fa.
Related Translations
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