Merriam-Webster's Word of the Day for April 19, 2024 is:

underwhelm • \un-der-WELM\  • verb

To underwhelm someone is to fail to impress or excite them.

// Despite the hype, the movie underwhelmed most reviewers, who criticized its slow pace and poor special effects.

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Examples:

"Wake me up when NBA All-Star Weekend ends. Let’s start with the Dunk Contest, which is supposed to be the most exciting event. It wasn’t. Most of the dunks, and the judging of said dunks, underwhelmed." — Zachary Pereles, CBS Sports, 19 Feb. 2024

Did you know?

Overwhelm and its rare synonym whelm have both been around since the Middle Ages, but underwhelm is a 20th-century coinage. Both overwhelm and whelm come from the Middle English whelmen, meaning "to turn over" or "to cover up." Underwhelm is a playful overturning of overwhelm that is well suited for contexts in which something fails to excite. As is often the case with younger words, there is a certain amount of misinformation regarding where underwhelm came from. We have seen reports that the playwright George S. Kaufman coined it, and also that the famed sportswriter Red Smith claimed to have used it first. Neither of these is likely to be accurate, for the simple fact that there is evidence that underwhelming was used, albeit as an adjective, before either of these men was born.