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

Examples
El perro se pasó la tarde royendo un hueso.
The dog spent the afternoon gnawing on a bone.
Los ratones royeron los cables de la televisión.
The mice gnawed through the TV cables.
No debes roer el lápiz cuando estás nervioso.
You shouldn't chew on your pencil when you're nervous.
The Strange 'Yo' Form
In the present tense, the 'I' form has three accepted versions: 'roigo', 'royo', or 'roo'. 'Roigo' is the most common in textbooks as it follows a pattern similar to other irregular verbs.
The 'Y' Spelling Rule
When the verb ending starts with an 'e' or 'o' after the stem, the 'i' changes to a 'y' (like 'royó' instead of 'roió'). This helps the word sound smoother by preventing three vowels from clashing.
Using the wrong past tense
Mistake: “El ratón roió el papel.”
Correction: El ratón royó el papel. Because the letter 'i' is between two vowels, it must change to a 'y' in the past tense for he/she/it forms.
Related Translations
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