One of the most productive ways to form adverbs in Spanish is by adding the suffix -mente to the feminine singular form of an adjective. This works a lot like English -ly, and once you know the pattern you can create hundreds of adverbs on the fly.
The Basic Rule
Take the feminine singular form of the adjective and add -mente to the end.
| Adjective (m.) | Adjective (f.) | Adverb | Meaning |
|---|---|---|---|
| lento | lenta | lentamente | slowly |
| rápido | rápida | rápidamente | quickly |
| claro | clara | claramente | clearly |
| perfecto | perfecta | perfectamente | perfectly |
| tranquilo | tranquila | tranquilamente | calmly |
El profesor explica claramente.
The teacher explains clearly.
Terminó el examen rápidamente.
She finished the exam quickly.
Adjectives That Don't Have a Separate Feminine Form
For two-form adjectives that end in -e or a consonant, there's no separate feminine form, so you just add -mente to the single form.
| Adjective | Adverb | Meaning |
|---|---|---|
| triste | tristemente | sadly |
| alegre | alegremente | happily |
| amable | amablemente | kindly |
| feliz | felizmente | happily |
| natural | naturalmente | naturally |
Nos saludó amablemente.
He greeted us kindly.
Written Accents Are Preserved
If the original adjective has a written accent, that accent stays on the adverb — even though the stress of the spoken word now shifts to the -men- syllable. This is an irregularity you just have to remember: the spelling keeps the accent even though you no longer pronounce it as the stressed syllable.
| Adjective | Adverb | Meaning |
|---|---|---|
| fácil | fácilmente | easily |
| difícil | difícilmente | with difficulty |
| rápida | rápidamente | quickly |
| práctica | prácticamente | practically |
| común | comúnmente | commonly |
Lo resolví fácilmente.
I solved it easily.
Prácticamente no comí nada.
I practically didn't eat anything.
Two or More Adverbs in a Row
When you have two or more -mente adverbs connected with y ("and") or o ("or"), only the last one keeps the -mente ending. The earlier ones drop it and appear as the bare feminine adjective.
Habló lenta y claramente.
She spoke slowly and clearly.
Trabaja rápida, eficiente y cuidadosamente.
He works quickly, efficiently and carefully.
This rule is a stylistic preference that avoids the clunky sound of stacking several -mente endings. You'll see it in writing and hear it in careful speech.
Not Every Adjective Gets a -Mente Adverb
Some adjectives don't form -mente adverbs because the idea doesn't fit. Instead, Spanish uses a prepositional phrase like con + noun or de manera/forma + adjective.
| Instead of... | Spanish prefers | Meaning |
|---|---|---|
| (no adverb) | con cariño | affectionately |
| (no adverb) | con cuidado | carefully |
| (no adverb) | de manera extraña | strangely |
Lo dijo con cariño.
She said it affectionately.
A Few Common -Mente Adverbs
These show up all the time in Latin American Spanish:
- generalmente — generally
- normalmente — normally
- solamente — only
- finalmente — finally
- realmente — really
- exactamente — exactly
- probablemente — probably
Normalmente desayuno a las siete.
I normally have breakfast at seven.
Common mistakes
❌ Él habla rapidomente.
Wrong: -mente attaches to the feminine form, not the masculine.
✅ Él habla rápidamente.
Correct: rápida + -mente = rápidamente.
❌ Ella habla lentamente y claramente.
Not wrong, but awkward — drop -mente from the first adverb.
✅ Ella habla lenta y claramente.
Correct: with two -mente adverbs, only the last one keeps the suffix.
❌ Él trabaja fuertamente.
Wrong: fuerte already works as an adverb without -mente.
✅ Él trabaja fuerte.
Correct: some adjectives work directly as adverbs (fuerte, rápido, lento).
Where to Next
- Adverb Position — where to place your new adverbs
- Adverbs of Manner — the category most -mente adverbs belong to
- Four-Form Adjectives — the source of most feminine forms
Related Topics
- Adverbs OverviewA1 — An introduction to Spanish adverbs, what they modify, and the main categories you'll encounter
- Adverbs of MannerA2 — Spanish adverbs that tell you how something is done, including bien, mal, and adjective-as-adverb patterns
- Adverb PositionA2 — Where adverbs go in a Spanish sentence, with the main tendencies and the flexibility you have
- Four-Form Adjectives (-o/-a/-os/-as)A1 — Adjectives ending in -o have four forms that match the noun in gender and number