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adjective

antiseptic

/ˌæn.tɪˈsep.tɪk/  ·  say it: an·tih·SEP·tik

a substance that prevents infection on living tissue

In Medicine & Health

In more detail

1. (adjective) able to kill germs and prevent infection

2. (adjective) very clean and lacking warmth or personality

3. (noun) a substance that kills germs and prevents infection

Examples

How to use antiseptic

Antiseptic has two distinct senses: the primary medical sense refers to something that kills germs or prevents infection, while the secondary sense describes something that is so clean, orderly, or clinical that it feels cold and impersonal. This figurative use is common in describing spaces, writing styles, or relationships that lack warmth or humanity.

Common phrases

Synonyms

disinfectant · germicidal · sterile · aseptic · sanitizing

Opposites

septic · contaminated · infected

Word family

antiseptically (adverb) · antisepsis (noun)

A common mistake

Learners often confuse antiseptic with antibiotic; antiseptic prevents infection by killing germs on surfaces or skin, while antibiotic is a medication that kills bacteria inside the body.

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