Translation guide
How to express feeling nauseated or sick to your stomach in Japanese, from mild queasiness to severe nausea.
I feel nauseated.
I've been feeling nauseated since yesterday.
Very common casual expression meaning 'I feel sick/unwell.' Can refer to nausea or general discomfort.
I feel kind of sick.
Casual verb meaning 'feel nauseated' or 'feel sick.' Also used figuratively for 'disgusted/irritated.'
My stomach feels queasy.
I ate too much and feel sick.
Means 'about to vomit' or 'feel like throwing up.' Stronger than just nausea.
I feel like I'm going to throw up.
Express nausea caused by motion, such as in a car, boat, or plane.
Express nausea related to pregnancy.
The standard term for morning sickness. Literally 'have morning sickness.'
My morning sickness is severe.
I feel nauseated from morning sickness.
Express that something is so disgusting it makes you feel nauseated.
吐き気がする is the most direct and neutral way to say 'I feel nauseated.' 気持ち悪い is broader and very common in casual speech, covering general unwellness. むかつく is casual and can also mean 'irritated' or 'disgusted,' so context matters.
I feel nauseated so I'll rest.
I feel sick so I'll go get some fresh air.
His attitude makes me sick/disgusts me.
Do not directly translate 'feel nauseated' as 吐き気を感じる. While understandable, it is not natural Japanese. Use 吐き気がする instead.
I feel so sick I might throw up.