el fijo

The Spanish word "fijo" primarily functions as an adjective and can have several related meanings in English:

Meaning

1. Fixed / stationary / permanent
   It describes something that does not move, change, or is stable in place or condition.
   Example: Un precio fijo — a fixed price.

2. Permanent / long-term
   It can refer to something established for a long duration, such as a job or a contract.
   Example: Trabajo fijo — permanent job.

3. Sure / certain / determined
   Informally, it can mean something that is definite or without doubt.
   Example: Estoy fijo en que vendrá — I'm certain that he/she will come.

Word Parts

• fij- comes from the verb fijar, meaning "to fix" or "to set."
• -o is a common masculine adjective ending in Spanish.

Synonyms (in Spanish)

• Inamovible (immovable)
• Estable (stable)
• Permanente (permanent)
• Seguro (certain, sure)—for the sense of "fixed/determined"

Antonyms (in Spanish)

• Móvil (mobile)
• Variable (variable)
• Temporal (temporary)

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In summary, "fijo" describes the quality of being stable, fixed, or permanent, and can be applied in many contexts, from physical immobility to job security or certainty of information.