Inklingo

How to Say "fundamental" in Spanish

The most common Spanish word for “fundamental” is “básico” — use 'básico' when referring to something that is elementary, foundational, or the simplest form of something, like core knowledge or skills..

básicoA1

Use 'básico' when referring to something that is elementary, foundational, or the simplest form of something, like core knowledge or skills.

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esencial🔊A2

Use 'esencial' when something is absolutely necessary or indispensable, highlighting its vital importance.

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fundamental🔊B1

Use 'fundamental' when referring to the base, principle, or underlying structure upon which something else is built or depends.

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primaria🔊B1

Use 'primaria' when referring to the main, principal, or first cause or reason for something.

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radical🔊B1

Use 'radical' when emphasizing a change or aspect that goes to the very root or origin of a matter, implying thoroughness.

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capital🔊B2

Use 'capital' when highlighting something as extremely important or principal, often referring to virtues or key elements.

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English → Spanish

básico

adjectiveA1General
Use 'básico' when referring to something that is elementary, foundational, or the simplest form of something, like core knowledge or skills.

Examples

Necesitas aprender el vocabulario básico primero.

You need to learn the basic vocabulary first.

esencial

eh-sen-SYAL/e.senˈsjal/

adjectiveA2General
Use 'esencial' when something is absolutely necessary or indispensable, highlighting its vital importance.
A simple gold key is shown perfectly inserted into a large, sturdy lock mounted on a wooden surface.

Examples

El agua potable es esencial para la vida humana.

Drinking water is essential for human life.

La comunicación es una parte esencial de cualquier relación.

Communication is an essential part of any relationship.

Este documento contiene la información esencial que necesitamos.

This document contains the essential information we need.

Adjective Placement

Like most descriptive adjectives, 'esencial' usually goes after the noun it describes, as in 'una parte esencial'.

One Form for All

Since 'esencial' ends in '-l', it is one of the adjectives that does not change form for masculine or feminine nouns. Use 'esencial' for both genders!

Creating a Feminine Form

Mistake: “La tarea es esenciala.”

Correction: La tarea es esencial. (The form 'esencial' works for both 'el' and 'la' nouns.)

fundamental

/foon-dah-men-TAHL//fundaemẽnˈtal/

adjectiveB1General
Use 'fundamental' when referring to the base, principle, or underlying structure upon which something else is built or depends.
A single sturdy wooden pillar standing in the center of a foundation, supporting a heavy roof.

Examples

El respeto es fundamental en una buena amistad.

Respect is fundamental in a good friendship.

Necesitamos un cambio fundamental en nuestra estrategia.

We need a fundamental change in our strategy.

Es una pieza fundamental del motor.

It is a key part of the engine.

One Form for All

This word is 'gender-neutral.' Whether you are describing a masculine noun like 'el libro' or a feminine noun like 'la idea,' the word 'fundamental' stays exactly the same.

Plural Pattern

To make this word plural, simply add '-es' to the end: 'los factores fundamentales' or 'las herramientas fundamentales'.

Ending with 'a'

Mistake: “la idea fundamentala”

Correction: la idea fundamental. Even though 'idea' ends in 'a,' words ending in 'l' don't change their ending for feminine words.

primaria

pree-MAH-ree-ah/pɾiˈma.ɾja/

adjectiveB1General
Use 'primaria' when referring to the main, principal, or first cause or reason for something.
An illustration showing four small blue spheres circling one large, dominant red sphere, symbolizing importance or being primary.

Examples

La razón primaria de su visita fue la salud.

The primary reason for her visit was health.

Necesitamos analizar la fuente primaria de información.

We need to analyze the primary source of information.

Esta es la función primaria de este órgano.

This is the primary function of this organ.

Agreement Matters

As an adjective, 'primaria' must match the gender and number of the noun it describes. Since this entry is for the feminine singular form, it pairs with feminine singular nouns (e.g., 'la función').

Using 'primaria' for masculine nouns

Mistake: “Decir 'el objetivo primaria'.”

Correction: The adjective must match: use 'el objetivo primario' (masculine form).

radical

/rah-dee-KAHL//raðiˈkal/

adjectiveB1General
Use 'radical' when emphasizing a change or aspect that goes to the very root or origin of a matter, implying thoroughness.
A vibrant landscape split down the middle: one side is a dry, gray desert and the other side is a lush, green rainforest.

Examples

Necesitamos un cambio radical en nuestra estrategia.

We need a radical change in our strategy.

Fue una decisión radical, pero necesaria.

It was a drastic decision, but a necessary one.

One Size Fits All

This word doesn't change based on gender. You can use it with both 'masculine' and 'feminine' things without changing the ending: 'un cambio radical' or 'una idea radical'.

Avoid 'Radicala'

Mistake: “una decisión radicala”

Correction: una decisión radical

capital

kah-pee-TAHL/ka.piˈtal/

adjectiveB2Formal
Use 'capital' when highlighting something as extremely important or principal, often referring to virtues or key elements.
An illustration showing one large, brightly colored star dominating the frame, symbolizing something principal or most important, surrounded by many smaller stars.

Examples

La honestidad es una virtud capital en cualquier persona.

Honesty is a principal/essential virtue in any person.

Cometieron un error capital al ignorar los avisos.

They committed a fundamental error by ignoring the warnings.

Invariable Adjective

As an adjective meaning 'principal' or 'chief,' 'capital' does not change its ending to match the gender of the noun it describes (e.g., 'error capital' and 'virtud capital').

Básico vs. Esencial vs. Fundamental

Learners often confuse 'básico', 'esencial', and 'fundamental'. Remember that 'básico' is about simplicity or the starting point, 'esencial' is about necessity, and 'fundamental' refers to the underlying base or principle.

Related Translations

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