How to Say "excessively" in Spanish
The Spanish word for “excessively” is “extremadamente” — B1 level. This is a very common word in everyday Spanish.

Examples
La prueba de matemáticas fue extremadamente difícil.
The math test was extremely difficult.
Ella habla inglés extremadamente bien.
She speaks English extremely well.
El presidente se mostró extremadamente cauteloso con su respuesta.
The president showed himself to be extremely cautious with his response.
The '-mente' Adverb Pattern
Most adverbs that show how something is done or how much are created by taking the feminine form of an adjective (like 'extrema') and adding the ending '-mente'.
Always Invariable
Unlike adjectives, adverbs like 'extremadamente' never change their form. They are the same whether you are talking about one thing or many things, and regardless of gender.
Using the Masculine Form
Mistake: “La cosa es extremo difícil.”
Correction: La cosa es extremadamente difícil. (The base adjective is 'extremo,' but for the adverb, you must use the '-mente' ending.)
Related Translations
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