The Chinese word for hot is
热

rè

Chinese Definition

hot
1. 形容词. 热的，温度高的
反义词：freezing, chilly, icy, cold, cool, warm
2. 形容词. 闷热的，觉得湿热的
3. 形容词. 辣的，辛辣的
4. 形容词. 活跃的，激烈的
5. 形容词. 艰难的，棘手的，危险的
6. 形容词. 风行的，走红的
7. 形容词. 最新的，新近的
8. 形容词. 有望成功的
9. 形容词. 十分了解的
10. 形容词. 暴躁的，易怒的
11. 形容词. 引起性激动的，性感的
近义词：attractive, beautiful, cute, fit, foxy, gorgeous, handsome, hunky, lush, pretty, sexy, studly, tasty, yummy
12. 形容词. 过激的，过火的
13. 形容词. 确保，重视
14. 形容词. （音乐）节奏强的
15. 形容词. 偷来而难以销赃的
16. 形容词. 快猜中了
17. 动词. 激烈起来，更加活跃
18. 动词. 加热，变热

熱
1. hot; heated; having a high temperature
一杯熱茶 - a cup of hot tea
今天很熱。 - It is quite hot today.
啲湯仲好熱，小心啲啦。 - The soup's still hot; be careful.
湯還熱呢，要小心。 - The soup's still hot; be careful.
2. to heat up; to warm up
3. heat; hotness; warmness; high temperature
傳熱 - to conduct heat
4. (literary) hot weather; summer heat
5. kind; amiable; fervent; close and dear
熱情 - enthusiastic
熱戀 - to be head over heels in love; to be madly in love
熱心腸 - warm-heartedness
6. fever; febrility; pyrexia
發熱 - to have a fever
退熱 - to bring down a fever
7. craze; fad
鋼琴熱 - piano craze; intense enthusiasm for learning the piano
8. popular; fashionable; in vogue
熱門 - popular; in vogue; hot
9. noisy; lively
熱鬧 - bustling; lively
10. (literary) worried; anxious; distraught
11. envious
眼熱 - to envy
12. (traditional Chinese medicine) heaty

辣
1. spicy; hot; peppery; pungent; hot
無辣不歡 - I don't find food that isn't spicy tasty.
我不吃辣。 - I don't eat spicy food.
2. to be spicy; to be hot; to burn
3. cruel; vicious
毒辣 - sinister
La
4. to be at; to be located at
5. at; in
6. be ...-ing; in the middle of doing something (indicating an action in progress)
7. Variant of 焫

热
1. Simplified form of 熱

炎熱
1. adj. (of weather) extremely hot; blistering hot; scorching; blazing; sweltering

炎热
1. Simplified form of 炎熱

發燒
1. v. (medical sign) to have a fever; to have a high body temperature
2. v. (figurative) to be fascinated with something; to be a fan of
3. v. (figurative) to be flourishing; to be thriving
4. v. (music) to be of audiophile sound quality
發燒碟 - hi-fi CD