IPA: /ˈsɛd.ə.tɪv/
KK: /ˈsɛdətɪv/
Having a calming effect that helps to reduce anxiety or excitement.
The doctor prescribed a sedative to help her relax before the surgery.
Comparative: more sedative
Superlative: most sedative
A substance that helps to calm or relax a person, often used to reduce anxiety or induce sleep.
The doctor prescribed a sedative to help her sleep better at night.
Sedative → It is formed from "sedare" (meaning to calm or to settle) and the suffix "-ive" (meaning having the nature of). The word "sedative" refers to something that has the nature of calming or settling down.
Think of something that helps to 'calm' ('sedare') you down, which is what a sedative does.