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

Examples
No tengas miedo, el perro es pequeño e inofensivo.
Don't be afraid, the dog is small and harmless.
Fue solo una broma inofensiva, no quería molestarte.
It was just a harmless joke, I didn't want to upset you.
Muchos creen que este químico es inofensivo para el medio ambiente.
Many believe this chemical is harmless to the environment.
Changing for gender
Remember to change the last letter to 'a' (inofensiva) when describing something feminine, like 'una mentira' (a lie).
Word order
In Spanish, this word usually goes after the thing you are describing: say 'un juego inofensivo' rather than 'an inofensivo juego'.
Spelling Trap
Mistake: “inoffensivo”
Correction: inofensivo (only one 'f' in Spanish!)
Agreement Error
Mistake: “Las serpientes son inofensivo.”
Correction: Las serpientes son inofensivas. (The word must match the plural and feminine subject 'serpientes').
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