mug·​gy | \ ˈmə-gē How to pronounce muggy (audio) \
muggier; muggiest

Definition of muggy

: being warm, damp, and close

Keep scrolling for more

Other Words from muggy

mugginess \ ˈmə-​gē-​nəs How to pronounce mugginess (audio) \ noun

Synonyms & Antonyms for muggy


damp, humid, sticky, sultry



Visit the Thesaurus for More 

Examples of muggy in a Sentence

a muggy day in August It's very muggy out today.

Recent Examples on the Web

Saturday night could also see a few showers or storms, with muggier lows in the upper 60s to low 70s. Matt Rogers, Washington Post, "D.C.-area forecast: Showers and storms return before a drier, warmer rest of week," 22 May 2018 Confidence: High Tonight: Partly cloudy and a muggy mess, with dew points still in the 70s and lows ranging anywhere from the low 70s in the outer suburbs to the upper 70s in the city. Matt Rogers, Washington Post, "D.C.-area forecast: Mid-90s with higher humidity today, but nicer weekend ahead," 3 July 2018 The jet stream will try to take some more dips into the United States in the coming week or two, breaking up this stuck, muggy weather pattern. Jason Samenow, Washington Post, "After 10 inches of rain in D.C., the Potomac is about to hit highest level in 8 years," 4 June 2018 Friday the 13th gets a bad rap from the superstitious, but your sleeplessness might have more to do with hot, muggy conditions. Weldon B. Johnson, azcentral, "Sleepless in Arizona? It's that time of year," 13 July 2018 Confidence: Medium-High Friday is likely the eighth straight hot and muggy day, but the last. Jason Samenow, Washington Post, "D.C.-area forecast: It’s the hottest day of this heat wave, but it will stay steamy through Friday," 2 July 2018 Temperatures are anticipated to dip to around 50 overnight, when clouds will roll in to foreshadow a muggy few days, Dunham said. Alana Levene,, "After a sunny Sunday, rain is expected on Monday and Tuesday," 3 June 2018 The National Weather Service forecasts hot and muggy conditions across much of the Southern and Central Plains, as well as the Midwest, over the next few days, with high humidity and afternoon highs generally ranging from the 90s to low 100s. Doug Stanglin, USA TODAY, "Dangerous mass of hot, humid air triggers heat advisories in Midwest, targets East," 16 June 2018 Expect another hot and muggy day today in Central Florida. Martin E. Comas,, "Weather forecast: Another hot and muggy day," 4 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'muggy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of muggy

1728, in the meaning defined above

History and Etymology for muggy

English dialect mug drizzle

Keep scrolling for more

Learn More about muggy

Statistics for muggy

Look-up Popularity

Time Traveler for muggy

The first known use of muggy was in 1728

See more words from the same year

Keep scrolling for more

More Definitions for muggy



English Language Learners Definition of muggy

: unpleasantly warm and humid


mug·​gy | \ ˈmə-gē How to pronounce muggy (audio) \
muggier; muggiest

Kids Definition of muggy

: being very warm and humid muggy weather

Other Words from muggy

mugginess noun

Keep scrolling for more

More from Merriam-Webster on muggy

Rhyming Dictionary: Words that rhyme with muggy

Thesaurus: All synonyms and antonyms for muggy

Spanish Central: Translation of muggy

Nglish: Translation of muggy for Spanish Speakers

Comments on muggy

What made you want to look up muggy? Please tell us where you read or heard it (including the quote, if possible).


a sum of money that is sent as a payment

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
True or False

Test your knowledge - and maybe learn something along the way.


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!