What is the past tense of "recognize"?

The past simple of "recognize" is "recognized". I recognized my friend at the airport from a distance.

What is the past participle of "recognize"?

The past participle of "recognize" is "recognized". Use it after have/has/had: "I have recognized".

What is a common mistake with "recognize"?

Wrong: "I recognize him yesterday in the street.". Correct: "I recognized him yesterday in the street.". Past time marker 'yesterday' requires past simple 'recognized', not present 'recognize'.

Conjugation of "Recognize" — All Forms, Examples, and Usage

Q: Is "recognize" regular or irregular?

"Recognize" is a regular English verb. Both past simple and past participle are formed by adding -ed.

Q: How do you pronounce "recognize"?

/ˈrɛkəɡnaɪz/ — Four syllables: REC-ug-NIZE. Stress on first syllable REC and third syllable NIZE.

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All 12 Tenses of "Recognize"

Quick reference table — every tense form of "recognize" with the first-person example and a link to the grammar guide for that tense.

Tense	Example (I)	Quick rule
Simple Present	`I recognize`	Used for habits, facts, routines, and permanent situations. Full rule →
Simple Past	`I recognized`	Used for completed actions at a specific time in the past. Full rule →
Simple Future	`I will recognize`	Used for predictions, decisions made at the moment, and promises. Full rule →
Present Continuous	`I am recognizing`	Used for actions happening right now or temporary situations. Full rule →
Past Continuous	`I was recognizing`	Used for actions in progress at a specific moment in the past. Full rule →
Future Continuous	`I will be recognizing`	Used for actions that will be in progress at a specific future time. Full rule →
Present Perfect	`I have recognized`	Used for past actions with present relevance, life experiences, or unfinished situations. Full rule →
Past Perfect	`I had recognized`	Used for an action that was completed before another past action. Full rule →
Future Perfect	`I will have recognized`	Used for an action that will be completed before a specific future time. Full rule →
Present Perfect Continuous	`I have been recognizing`	Used for actions that started in the past and continue now, with focus on duration. Full rule →
Past Perfect Continuous	`I had been recognizing`	Used for ongoing actions in the past that continued up to another past moment. Full rule →
Future Perfect Continuous	`I will have been recognizing`	Used for actions that will have been ongoing up until a specific future time. Full rule →

Past Tense of "Recognize" — Recognized

The past simple of "recognize" is "recognized" — formed by adding "-ed". Use it for actions that were completed at a specific time in the past, such as "yesterday", "last week", or "in 2020". For the full grammar of this tense, see our simple past tense guide.

I recognized my friend at the airport from a distance. A2

Past Participle of "Recognize" — Recognized

The past participle of "recognize" is "recognized" — the same form as the past simple, since "recognize" is a regular verb. Use it after "have/has/had" for perfect tenses ("I have recognized") and after "be" for passive voice ("It was recognized").

I recognized my friend at the airport from a distance. A2

Is "Recognize" Regular or Irregular?

"Recognize" is a regular English verb. Its past simple and past participle are both formed by adding "-ed" to give "recognized". The 3rd-person singular present is "recognizes" and the gerund/present participle is "recognizing".

Conjugation pattern: regular: recognize-recognized-recognized

How to Pronounce "Recognize" and Its Forms

Recognize: /ˈrɛkəɡnaɪz/ — Stress pattern: Ooo

Four syllables: REC-ug-NIZE. Stress on first syllable REC and third syllable NIZE.

Common mispronunciation of "recognize"

Sometimes /rɪˈkɑɡnaɪz/ with stress on second syllable; correct is REC-ug-NIZE.

Syllable breakdown: REC · ug · NIZE

How to Use "Recognize" — Common Grammar Patterns

Use 'recognize' with direct object (recognize a person/thing), often with 'can' or 'cannot'.

S + V + object
S + can V + object
S + V + noun clause

Example Sentences with "Recognize" in Different Tenses

Simple Present: She did not recognize him because he had changed a lot. B1
Simple Past: I recognized my friend at the airport from a distance. A2

Common Collocations with "Recognize"

recognize a face — I recognize your face, but I forget your name.
recognize someone — She didn't recognize him after all these years.
widely recognized — He is widely recognized as an expert.
recognize the importance — We must recognize the value of hard work.
recognize the problem — They failed to recognize the danger.

When to Use "Recognize" vs Similar Verbs

"recognize" vs "remember"

Remember means to recall from memory; recognize means to identify someone seen before.

Smart synonyms — when to use each one

identify — for naming or determining exactly what something is
remember — for recalling from memory someone seen before
spot — for noticing or seeing someone in a crowd

Antonyms: forget, overlook

Common Mistakes with "Recognize"

Wrong: I am recognizing him immediately.
Correct: I recognize him immediately. / I recognized him immediately.
"Recognize" (identify) is stative. Continuous is rare unless meaning "is in the process of identifying".
Wrong: She don't recognize the song.
Correct: She doesn't recognize the song.
Use "doesn't" (does + not), not "don't" with third-person singular.
Wrong: They recognizing his voice from the phone.
Correct: They recognized his voice from the phone.
Use past tense; "recognizing" alone is incomplete.

Origin and Etymology of "Recognize"

From Latin 're-' (again) + 'cognoscere' (to know). Means to know again.

Central to security, identity, and memory; used in passport control, social interaction, and forensics.

Other Forms of "Recognize"

Noun: recognition

Conjugation Tables for "Recognize"

Negative Forms

Simple present: I do not recognize · He does not recognize
Simple past: I did not recognize · She did not recognize
Present perfect: I have not recognized · He has not recognized

Question Forms

Simple present: Do you recognize? · Does he recognize?
Simple past: Did you recognize?
Present perfect: Have you recognized?

Passive Voice (where applicable)

Simple present passive: It is recognized
Simple past passive: It was recognized
Present perfect passive: It has been recognized

Frequently Asked Questions About "Recognize"

Is "recognize" regular or irregular?: "recognize" is a regular verb. Add -ed for past simple and past participle: "recognized".
What is the past tense of "recognize"?: The simple past of "recognize" is "recognized".
When do I use simple present vs present continuous with "recognize"?: Use simple present for habits, facts, and routines: "I recognize every day." Use present continuous for actions happening right now: "I am recognizing right now."
What's a common mistake with "recognize"?: "Recognize" (identify) is stative. Continuous is rare unless meaning "is in the process of identifying". Wrong: "I am recognizing him immediately." Correct: "I recognize him immediately. / I recognized him immediately."