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How to Say "rigorous" in Spanish

English → Spanish

estricto

/es-TREEK-toh//esˈtrikto/

adjectiveA2general
Use 'estricto' when referring to rules, discipline, or adherence to a specific standard, often implying strictness in enforcement.
A stern teacher standing with their arms crossed in front of a clean, orderly classroom.

Examples

Mi padre es muy estricto con la hora de volver a casa.

My father is very strict about the time I have to come home.

Para perder peso, ella sigue una dieta muy estricta.

To lose weight, she follows a very strict diet.

En sentido estricto, esa no es la respuesta correcta.

In a literal sense, that is not the correct answer.

Changing for Gender

This word needs to match the thing it describes. Use 'estricto' for masculine words like 'padre' and 'estricta' for feminine words like 'regla'.

Where to put it

Usually, you place 'estricto' right after the noun you are describing, such as 'un profesor estricto' (a strict teacher).

Strict vs. Tight

Mistake: “Llevo unos pantalones muy estrictos.”

Correction: Llevo unos pantalones muy apretados. Use 'estricto' for behavior or rules; use 'apretado' for clothes that are too small.

riguroso

/ree-goo-ROH-soh//ri.ɡu.ˈɾo.so/

adjectiveB2formal
Choose 'riguroso' when describing a method, study, or process that is thorough, exact, and meticulously detailed.
A person using a magnifying glass to carefully examine a tiny flower in a garden.

Examples

El científico siguió un método riguroso para su experimento.

The scientist followed a thorough method for his experiment.

El profesor es muy riguroso con la corrección de los exámenes.

The teacher is very strict with the grading of the exams.

Necesitamos un análisis riguroso de la situación financiera.

We need a rigorous analysis of the financial situation.

Gender Matching

Since this is an adjective, it must match the thing it describes. Use 'riguroso' for masculine things and 'rigurosa' for feminine things.

Position Matters

Placing 'riguroso' after the noun (e.g., 'un examen riguroso') emphasizes the strictness or precision of the object.

Riguroso vs. Difícil

Mistake: “Using 'riguroso' to mean just 'hard' or 'difficult'.”

Correction: Use 'riguroso' when you mean disciplined, precise, or rule-following. For general difficulty, stick with 'difícil'.

severo

seh-BEH-roh/seˈbeɾo/

adjectiveB1general
Use 'severo' to describe a person, rule, or consequence that is harsh, stern, or uncompromising.
A stern teacher standing with arms crossed in front of a chalkboard.

Examples

Mi abuelo era un hombre muy severo pero nos quería mucho.

My grandfather was a very strict man but he loved us a lot.

El juez dictó una sentencia severa contra el criminal.

The judge handed down a harsh sentence against the criminal.

Las reglas del internado son muy severas.

The rules of the boarding school are very strict.

Adjective Agreement

Like most adjectives ending in 'o', it must change to 'severa' when describing feminine things (una regla severa) and add an 's' for plurals (castigos severos).

Position Matters

Placing 'severo' after the person or thing you are describing is the standard way to emphasize the quality of being strict.

False Friend Alert

Mistake: “Using 'severo' for every situation where English uses 'severe'.”

Correction: While 'severo' can mean severe, for medical issues like 'a severe headache', Spanish speakers often prefer 'fuerte' (strong) or 'agudo' (sharp).

rígido

adjectiveB2general
Opt for 'rígido' when referring to something inflexible, unchangeable, or very strict in its structure, like a schedule or set of requirements.

Examples

Mi jefe tiene un horario muy rígido.

My boss has a very rigid schedule.

Estricto vs. Riguroso

Learners often confuse 'estricto' and 'riguroso'. Remember, 'estricto' usually applies to rules and discipline (like a strict teacher), while 'riguroso' describes a careful, detailed process or method (like a rigorous scientific study).

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