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How to Say "rationale" in Spanish

English → Spanish

justificación

nounB1general
Use 'justificación' when you need to explain the logical basis or defense for a belief, action, or decision, often implying a need to prove its validity.

Examples

Necesito una justificación clara para este gasto inesperado.

I need a clear justification for this unexpected expense.

razonamiento

rrah-soh-nah-myehn-tohraθonaˈmjento

nounB2general
Use 'razonamiento' when referring to the process of logical thinking or the series of steps taken to arrive at a conclusion or decision.
A colorful illustration of a person sitting under a tree, holding a single glowing puzzle piece and looking at it thoughtfully.

Examples

El razonamiento detrás de su estrategia es complejo.

The reasoning behind his strategy is complex.

No sigo tu razonamiento en este punto.

I don't follow your reasoning on this point.

Su razonamiento lógico fue impecable durante el juicio.

His logical reasoning was flawless during the trial.

Es difícil entender el razonamiento detrás de esta decisión política.

It is difficult to understand the rationale behind this political decision.

The '-miento' Pattern

Words ending in '-miento' are almost always masculine and describe the result of an action. In this case, it's the result of 'razonar' (to reason).

Abstract Nouns

Even though this word is abstract, it still behaves like a normal object. You can have one 'razonamiento' or many 'razonamientos'.

Gender Error

Mistake:la razonamiento

Correction: el razonamiento (most nouns ending in -o are masculine).

Wrong Word Choice

Mistake:Tengo un razonamiento para llegar tarde.

Correction: Tengo una razón para llegar tarde. Use 'razón' for a simple cause, and 'razonamiento' for a logical process.

Justificación vs. Razonamiento

Learners often confuse 'justificación' and 'razonamiento' by using 'justificación' when they mean the thought process. Remember that 'justificación' is about defending or explaining *why* something is right or acceptable, while 'razonamiento' is about the logical steps themselves.

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