How to Say "thought bubble" in Spanish
The Spanish word for “thought bubble” is “bocadillo” — B2 level.

Examples
El dibujante olvidó poner el texto dentro del bocadillo.
The illustrator forgot to put the text inside the speech bubble.
En los cómics, los bocadillos con bordes de nubes representan pensamientos.
In comics, bubbles with cloud-like edges represent thoughts.
Si el bocadillo es muy pequeño, la letra no se puede leer.
If the speech bubble is too small, the font cannot be read.
Visual Context
This meaning is purely visual. Think of the bubble 'holding' the words like bread holds meat in a sandwich.
Literal Translation
Mistake: “Using 'burbuja de hablar' for speech bubble.”
Correction: Use 'bocadillo' or 'globo' instead; 'burbuja' is usually for physical soap bubbles or economic bubbles.
Related Translations
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