all-in

adjective (1)

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\ ˌȯl-ˈin

Definition of all-in

(Entry 1 of 2)

1 chiefly British : all-inclusive

2 chiefly British : being almost without restrictions all-in wrestling

all in

adjective (2)

variants: or less commonly all-in \ ˌȯl-ˈin

Definition of all in (Entry 2 of 2)

1 : tired, exhausted 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 Diamondbacks are all-in for this year. It's why they brought in J. D. Martinez at the trade deadline. They have a healthy mix of young and veteran players, and they're looking to make a run this October.— Kevin Skiver —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 Rochowski