humid
Americanadjective
adjective
Usage
What does humid mean? Humid is used to describe air that is full of water vapor. Humid is most commonly applied to weather or the general climate of a place, especially when the temperature is hot. The noun form of humid is humidity. Example: Summertime in Florida is almost unbearably humid.
Related Words
See damp.
Other Word Forms
Etymology
Origin of humid
First recorded in 1375–1425; late Middle English, from Latin (h)ūmidus, equivalent to (h)ūm(ēre) “to be moist” + -idus -id 4
Explanation
When there is a lot of moisture in the air, it is humid out. The air in a rain forest is humid, the air in a desert is dry. People like to say that it's not the heat that bothers them, it's the humidity. They say this because when it is humid, or when there is a lot of water in the air, the heat feels hotter. It also makes wavy hair frizzy and straight hair limp. Air that is cold and moist is called damp, so when people talk about humid air, think tropical, as that's usually how the word is meant.
Vocabulary lists containing humid
The Sweltering Words of Summer
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Seedfolks
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Mexico - Introductory
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The samples contained pollen and plant waxes associated with humid West African rainforests, while very low levels of grass pollen suggested the site was surrounded by dense woodland rather than a thin strip of forest.
From Science Daily • May 20, 2026
The room suddenly felt hotter and more humid than before.
From Los Angeles Times • Apr. 10, 2026
We get up there and it’s hot and humid and people are passing out.
From The Wall Street Journal • Apr. 6, 2026
"It's really hot and humid in the summer, which I think will really help them when they are going to Miami because it's going to be so, so hot down there."
From BBC • Mar. 31, 2026
The air was hot and humid, pungent with the odors of sweaty wool, sawdust, and animal dung.
From "The City Beautiful" by Aden Polydoros
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
