吐き気（はきけ、hakike）
- nausea

The Japanese word 吐き気 はきけ refers to the feeling of nausea or the urge to vomit. It describes the sensation of being sick to your stomach, where you feel like you might throw up. It's a common symptom associated with various medical conditions, motion sickness, or food poisoning. 吐き気 はきけ itself isn't the act of vomiting, but the precursory feeling leading to it.

⚫︎吐き気がひどくて、何も食べられない。 Translation: I feel so nauseous, I can't eat anything. ⚫︎船酔いで吐き気がした。 Translation: I felt nauseous from seasickness. ⚫︎食べ過ぎて吐き気がした。 Translation: I felt sick because I ate too much.

You can use 吐き気 はきけ when you want to express that someone is feeling nauseous. ⚫︎ It is appropriate in both formal and informal conversations. ⚫︎ You can use it to describe your own feelings or to ask someone else if they're feeling nauseous. ⚫︎ You can also use it to explain a situation that caused the feeling, such as motion sickness or food poisoning.

⚫︎ The word 吐き気 はきけ is typically written in hiragana. ⚫︎ The kanji form 吐き気 is also used, but it's less common in everyday conversation. ⚫︎ The kanji 吐 means "to spit up" or "to vomit." ⚫︎ The word is typically written as 吐き気. There are no significant variations in okurigana.

⚫︎ 気持ち悪い (きもちわるい) - feeling sick, unpleasant (can refer to nausea) ⚫︎ むかつき (むかつき) - nausea, feeling queasy ⚫︎ 嘔気 (おうき) - another formal way to say nausea, or the feeling of wanting to vomit (less common)

There aren't direct antonyms for 吐き気, as it is a description of a physical sensation. You could describe the absence of 吐き気 with phrases like: ⚫︎ 気分が良い (きぶんがいい) - feeling well ⚫︎ 食欲がある (しょくよくがある) - having an appetite

昨夜、変なものを食べたせいで、朝から吐き気が止まらない。 ・Translation: Since I ate something strange last night, I haven't been able to stop feeling nauseous since morning. ・Explanation: This sentence explains that the cause of the nausea is eating something unusual, and the feeling continues throughout the morning.

乗り物酔いで、ずっと吐き気がする。 ・Translation: I've been feeling nauseous all along because of motion sickness. ・Explanation: This sentence describes the persistent feeling of nausea due to motion sickness.

The word 吐き気 is derived from the verb 吐く (はく), which means "to vomit" or "to throw up," and the suffix 気 (け), which denotes a feeling or a state. Therefore, 吐き気 essentially means "the feeling of wanting to vomit" or "the feeling of being about to vomit."