Brag, boast, as in I don't believe he's ever shot even a duck, but he sure talks big about hunting. This colloquial idiom was first recorded in 1699.
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Words nearby talk big
Example sentences from the Web for talk big
In that photo, Merabet has a big smile that spreads across his whole face and lights up his eyes.
What celebrity has started to talk about his or her eating disorder?How Skinny Is Too Skinny? Israel Bans ‘Underweight’ Models|Carrie Arnold|January 8, 2015|DAILY BEAST
Hopefully not overly close, but we talk about it in the episode how similar it is.‘Archer’ Creator Adam Reed Spills Season 6 Secrets, From Surreal Plotlines to Life Post-ISIS|Marlow Stern|January 8, 2015|DAILY BEAST
The Big Five banks dubbed too big to fail, are 35 percent bigger than they were when the meltdown was triggered.Sen. Warren’s Main Street Crusade to Pressure Clinton|Eleanor Clift|January 8, 2015|DAILY BEAST
Their three-day scientific outing was paid for by Epstein and was big success.Sleazy Billionaire’s Double Life Featured Beach Parties With Stephen Hawking|M.L. Nestel|January 8, 2015|DAILY BEAST
The big room at King's Warren Parsonage was already fairly well filled.
Sol laughed out of his whiskers, with a big, loose-rolling sound, and sat on the porch without waiting to be asked.The Bondboy|George W. (George Washington) Ogden
There were at least a dozen ladies seated round the big table at the Parsonage.
I pictured him as slim and young looking, smooth-faced, with golden curly hair, and big brown eyes.The Boarded-Up House|Augusta Huiell Seaman
Big Reginald took their lives at pool, and pocketed their half-crowns in an easy genial way, which almost made losing a pleasure.