热

Tap the pinyin to hear it

to warm up; to heat up; hot (of weather); heat; fervent

Sound it out + =

Formation & memory

Break the character into parts you already know.

Phono-semantic compound (形声字)

灬 meaning “fire” + 执 sound ( zhí )

Components 执灬

heat · Heisig RSH #603

执 clench + cooking fire

Keyword method from Heisig's Remembering Simplified Hanzi.

The most common words first — learning a character in context makes it stick.

Word	Pinyin	Meaning
热中子	rè zhōng zǐ	thermal neutron
一头热	yī tóu rè	one-sided enthusiasm (abbr. for 剃頭挑子一頭熱\|剃头挑子一头热[ti4 tou2 tiao1 zi5 yi1 tou2 re4])
大热天	dà rè tiān	scorcher; very hot day
白热化	bái rè huà	to turn white-hot; to intensify; to reach a climax
热力学	rè lì xué	thermodynamics
文化热	wén huà rè	cultural fever; cultural craze
热水器	rè shuǐ qì	water heater
大热	dà rè	great heat; very popular
热水	rè shuǐ	hot water
无线热点	wú xiàn rè diǎn	Wi-Fi hotspot
热中	rè zhōng	variant of 熱衷\|热衷[re4 zhong1]
热心	rè xīn	enthusiastic; ardent; zealous
生热	shēng rè	to generate heat
地热	dì rè	geothermal heat
热天	rè tiān	hot day
自热	zì rè	to heat up by itself; (attributive) self-heating (esp. of meal kits heated with a water-ac…
白热	bái rè	white heat; incandescence
热机	rè jī	heat engine
高热病	gāo rè bìng	fever; high fever
热带地区	rè dài dì qū	the tropics

Characters sharing the sound component 执 — compare how they read.

Character	Pinyin	Meaning
执 sound part	zhí	to execute; to grasp, to hold; to keep; to sieze, to detain
势	shì	power, force; tendency, attitude
垫	diàn	cushion, mat, pad; to advance money, to pay for another
蛰	zhé	to hibernate
贽	zhì	tribute; a gift given to a superior
鸷	zhì	hawk, vulture

Real sentences with 热 — read them aloud, then paste your own into the converter.

Usage tip: 热既指温度高（天气、水），也指态度热烈（热情 = enthusiastic）。