Merriam-Webster's Word of the Day for June 11, 2026 is:

saturnine • \SAT-er-nyne\  • adjective

Saturnine is a literary word that typically describes people who are glum and grumpy, or things that suggest or express gloom. It can also mean “slow to act or change.”

// A walk in the sunshine can improve your mood significantly, raising the spirits of even the most saturnine among us.

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Examples:

“If he was once more cautious in interviews, coming across as a little saturnine, he’s looser now, illuminated by flashes of wry humour.” — Patrick Smith, The Independent (United Kingdom), 1 Feb. 2026

Did you know?

Saturnine is far—even astronomically far—from the cheeriest of words. It has a long history of describing the glum and grouchy among us, and comes ultimately from Sāturnus, name of the Roman god of agriculture, who was often depicted as a bent old man with a stern, sluggish, and sullen nature. Saturn, the ringed gas giant that is one of five planets visible to the naked eye, is of course the namesake of Sāturnus, and Saturn does indeed seem to dawdle; it requires over 29 of our Earth years to orbit the sun. The ancient Romans (like some astrologers today) believed those who are born when Saturn is rising in the sky tend toward being a Gloomy Gus or Debbie Downer. We don’t know A. A. Milne’s take on the influence of Saturn, but his gloomy, cynical gray donkey Eeyore is famously saturnine, a fact Eeyore himself would surely stoically accept as true if it were pointed out to him.