How to Say "to identify" in Spanish
The most common Spanish word for “to identify” is “identificar” — use this word when you mean to recognize or establish who or what something is, often in a general sense or to discover the cause of something.
identificar
ee-den-tee-fee-KARi.ðen.ti.fiˈkaɾ

Examples
Pudimos identificar la causa del problema rápidamente.
We were able to identify the cause of the problem quickly.
La policía identificó al sospechoso por las cámaras de seguridad.
The police identified the suspect using the security cameras.
Necesitas identificar tu equipaje antes de salir del aeropuerto.
You need to identify (tag/claim) your luggage before leaving the airport.
The 'c' to 'qu' Spelling Rule
In the Preterite 'yo' form (identifiqué) and the Subjunctive, the 'c' changes to 'qu' to keep the hard 'k' sound that the verb has in its base form. This is very common for -car verbs!
Forgetting the Spelling Change
Mistake: “Yo identificé (Incorrect spelling in preterite)”
Correction: Yo identifiqué. The 'c' must change to 'qu' before 'e' to maintain the correct pronunciation.
caracterizar
ka-rahk-teh-ree-SAHRkaɾakteɾiˈθaɾ

Examples
Su honestidad lo caracteriza.
His honesty is what characterizes him.
Esta región se caracteriza por su clima seco.
This region is known for its dry climate.
Es difícil caracterizar su estilo literario en pocas palabras.
It is difficult to characterize his literary style in a few words.
The 'Z' to 'C' Spelling Change
When a verb ends in -zar, the 'z' changes to a 'c' whenever it is followed by the letter 'e'. This happens in the 'yo' form of the past tense and in all forms of the special 'wishes/commands' (subjunctive) mode.
Using 'Por' for Qualities
When you want to say something is 'known for' a specific trait, use the reflexive form 'caracterizarse' followed by the word 'por'.
English Spelling Influence
Mistake: “characterizar”
Correction: caracterizar. In Spanish, we never use 'ch' to make a 'k' sound. Use a simple 'c' instead.
designar
deh-seen-yardesiɣˈnaɾ

Examples
Las líneas rojas designan las zonas de peligro.
The red lines identify the danger zones.
El gobierno designó fondos para la educación.
The government earmarked funds for education.
Esta palabra se usa para designar un tipo de planta.
This word is used to denote a type of plant.
Used with inanimate objects
Unlike the first meaning (appointing people), when identifying things or places, you do NOT use the 'personal a'.
Overusing Designar
Mistake: “Designa la sal, por favor.”
Correction: Use 'pásame' or 'señala'. 'Designar' is too formal for everyday objects at the dinner table.
diagnosticar
dyahg-noh-stee-kardjaɣnostiˈkaɾ

Examples
El médico necesita más pruebas para diagnosticar la enfermedad.
The doctor needs more tests to diagnose the illness.
Es difícil diagnosticar el problema del coche sin abrir el motor.
It is difficult to identify the car's problem without opening the engine.
Los expertos diagnostican un cambio en el clima económico.
Experts identify a change in the economic climate.
The 'C' to 'QU' Spelling Change
In the past tense 'yo' form and all 'wishing' (subjunctive) forms, the 'c' changes to 'qu' to keep the hard 'k' sound: 'yo diagnostiqué' (I diagnosed).
Direct Action
Unlike English where we often use the passive ('He was diagnosed'), Spanish speakers often prefer the active voice: 'El médico lo diagnosticó' (The doctor diagnosed him).
Using 'con' incorrectly
Mistake: “El médico diagnosticó con gripe.”
Correction: El médico diagnosticó gripe.
Confusing 'identificar' with 'caracterizar'
Related Translations
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