Synonyms of all-innext
1
chiefly British : including everything : all-inclusive
the all-in price/cost/rate
While the face value of the [rail pass] ticket is pounds 128, it works out far cheaper to buy an all-in package which includes your flights.—Suzy Jagger
2
chiefly British : being almost without restrictions
all-in wrestling

all in

2 of 2

adjective (2)

variants or less commonly all-in
1
: tired, exhausted entry 1
Atticus said as tactfully as he could that he just didn't think he could stand a pageant tonight, he was all in.—Harper Lee
Inside, the invalid had gone to bed; her mother said, "She was all in," and expressed pity for her, for the first time.—Edna O'Brien
2
: fully committed to or involved in something
The team is all-in for a championship bid this year.
—often used in the phrase go all in
With my bonus in tow, I got the far-fetched idea I didn't feel like working that type of pace anymore. So I went all in on real estate on my own.—Philip Michael

Note: In poker, to go all in is to bet everything on a hand.

The best my opponent could have at this point was a 5-high straight, so I went all in—my full $220,000 was riding on this hand. The last card was a Jack—and I was out.—John Grochowski

Examples of all-in in a Sentence

Adjective (1) all-in seven-day tour of Scotland Adjective (2) was all in after an evening of dancing and partying
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
The partnership also marks a new frontier for Shopify, being the first time the all-in-one commerce platform has worked with a company of Lauder’s scale. — Noor Lobad, Footwear News, 9 Oct. 2026 Instead of relying on rolling chassis to be dressed in custom, labor-intensive bodywork, manufacturers increasingly embraced monocoque construction, integrating body and chassis into a single all-in-one structure. — Robb Report, 9 Oct. 2026 Fashion brands are going all-in on AI, and the generation most willing to shop that way is also the quickest to bounce. — Lauren Schuster, Sacbee.com, 9 Oct. 2026 Meanwhile, anyone reading this would be lucky to name a total of 10 people on this year’s notably all-in Rays, White Sox and Guardians. — Ryan Morik Outkick, FOXNews.com, 9 Oct. 2026 See All Example Sentences for all-in

Word History

First Known Use

Adjective (1)

1886, in the meaning defined at sense 1

Adjective (2)

1901, in the meaning defined at sense 1

Time Traveler
The first known use of all-in was in 1886

Browse Nearby Words

Cite this Entry

“All-in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/all-in. Accessed 11 Oct. 2026.

Love words? Need even more definitions?

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

More from Merriam-Webster