How to Say "tripping out" in Spanish
The Spanish word for “tripping out” is “rallado” — B2 level.

Examples
No te quedes rallado por lo que dijo, no era en serio.
Don't get all obsessed/worried about what he said; he wasn't serious.
Estoy muy rallado con este problema de matemáticas.
I'm really stuck/annoyed overthinking this math problem.
Ayer Carlos estaba muy rallado y no quiso salir.
Yesterday Carlos was really upset/tripping out and didn't want to go out.
Use with 'Estar'
When using this as a feeling, always use 'estar' (to be in a state). You wouldn't use 'ser' because this isn't a permanent personality trait.
Spelling confusion
Mistake: “Writing 'rayado' for this meaning.”
Correction: While many people use 'rayado' (like a scratched record), in Spain 'rallado' (like your brain being grated) is a very common informal spelling for this slang.
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