nausea; urge to vomit
Medical term for the sensation of nausea or feeling sick to one's stomach. In casual contexts, 吐き気 is more common.
I have persistent nausea as a side effect of the anticancer drug.
I felt nausea right after eating.
悪心 is a clinical term used in medical contexts for nausea, while 吐き気 is the everyday word.
Standard kanji spelling for the medical term 'nausea'.
Kana spelling is common in everyday writing, especially when the medical nuance is not emphasized.
Sino-Japanese compound of 悪 (bad, unpleasant) and 心 (heart, mind), originally referring to a disturbed state of mind or body. The modern medical sense 'nausea' is a specialized usage.