ばい菌

ばいきん

bacteria, germ(s)

JLPT N1

Character Breakdown

Understanding ばい菌

The word ばい菌 refers to bacteria or germs, often implying harmful microorganisms that can cause illness or infection. It is commonly used in everyday conversation, especially when discussing hygiene or health.

Usage and Nuance

ばい菌 is a casual term and often used in contexts related to cleanliness, such as washing hands or disinfecting surfaces. It carries a slightly negative connotation because it refers to unwanted microbes.

Common Collocations

  • ばい菌がつく: germs stick to something, often used when talking about hands or objects.
  • ばい菌を殺す: to kill germs, frequently used with disinfectants or cleaning.
  • ばい菌が繁殖する: germs multiply or breed, used in contexts about hygiene or damp environments.

Tips for Learners

Be careful not to confuse ばい菌 with 細菌 (さいきん), which is a more scientific term for bacteria. ばい菌 is more colloquial and often used in everyday speech. When talking about bacteria in a medical or scientific context, 細菌 is more appropriate.

Also, ばい菌 is usually plural in meaning but treated as singular grammatically in Japanese.

Example Sentences

てをあらわないと、ばいきんがついてしまうよ。

If you don't wash your hands, germs will stick to them.

ばいきんをころすために、しょうどくえきをつかってください。

Please use disinfectant to kill the germs.

ばいきんがはんしょくしやすいばしょはしっけがおおいところです。

Places where germs easily multiply are those with high humidity.