IPA: /ˌæn.ti.dɪˈprɛs.ənt/
KK: /ˌæntiˈdɪprɛsənt/
This term describes something that helps to reduce or prevent feelings of sadness or depression.
The doctor prescribed an antidepressant medication to help improve her mood.
A type of medicine that helps to improve mood and reduce feelings of sadness or depression.
The doctor prescribed an antidepressant to help manage her depression.
Antidepressant is formed from "anti-" (meaning against) and "depress" (from Latin "deprimere", meaning to press down) and "-ant" (a suffix used to form adjectives or nouns indicating an agent). The word refers to a substance that acts against depression by alleviating its symptoms.
Think of 'anti-' meaning against and 'depress' meaning to press down — an antidepressant is something that works against the feeling of being pressed down by depression.