Korean Dictionary
How to say "Virus" in Korean
“Virus” in Korean is 바이러스 (pronounced "bairoseu").
바이러스
bairoseu
Usage & Context
Malicious software that damages computers. Computer viruses are a threat that Korean users protect against with antivirus software.
Example Sentence
컴퓨터에 바이러스가 있어요.
My computer has a virus.
How to use 바이러스 naturally
Quick answer
The Korean word for “Virus” is 바이러스, romanized as bairoseu.
Usage tip
Learn this word together with a complete Korean sentence. Meaning often depends on particles, politeness level, and word order.
Common mistake
Do not rely only on the English meaning. Read the Korean example sentence and notice the particles, word order, and politeness level around 바이러스.
Pronunciation Guide
The word "바이러스" is pronounced "bai-reo-seu." "Bai" sounds like "bye." "Reo" is similar to "ruh" in "runner." "Seu" is like "soo" but with a very light 's' sound, almost like "sue" without the strong 'oo' at the end.
More Example Sentences
Complaining about a computer issue to a friend or colleague.
컴퓨터에 바이러스가 걸려서 느려졌어요.
My computer got a virus and became slow.
Giving advice on computer maintenance or troubleshooting.
백신 프로그램으로 바이러스를 치료해야 해요.
You need to cure the virus with an antivirus program.
A cybersecurity tip or best practice recommendation.
이메일 첨부 파일을 열기 전에 바이러스 검사를 하세요.
Scan for viruses before opening email attachments.
Cultural Context
"바이러스" is a very common term in Korea, used for both biological viruses (like the flu or COVID-19) and computer viruses. When referring to computer viruses, it's often paired with "백신 프로그램" (baeksin peurogeuraem, antivirus program) or "악성 코드" (akseong kodeu, malicious code). Due to Korea's high internet usage, awareness of computer viruses is generally high, and most users have some form of antivirus software installed.
Editorial note
We review entries like 바이러스 for pronunciation, example sentence fit, and learner mistakes so the page answers more than a direct dictionary lookup.
Reviewed by Min-jung Park, Korean Language Teacher. Updated May 31, 2026. See our editorial standards.
Common Phrases
바이러스에 걸리다
To catch a virus (computer or biological)
바이러스 검사
Virus scan
바이러스 치료
Virus treatment/removal
Related Expressions
악성 코드
akseong kodeu
Malicious code (malware)
웜
weom
Worm (computer worm)
트로이 목마
teuroi mongma
Trojan horse
백신 프로그램
baeksin peurogeuraem
Antivirus program
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