(US, idiomatic) Full of big talk but lacking action, power, or substance; pretentious.
(US, idiomatic) Full of big talk but lacking action, power, or substance; pretentious.
Don't waste your time with him - he's all hat and no cowboy.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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(US, idiomatic) Full of big talk but lacking action, power, or substance; pretentious.
(slang) A person who acts in a superior manner.
(informal) A person who engages in reckless behavior, especially for the purpose of showing off.
(British, idiomatic) Superficial, engaging in empty, boastful talk, but not of real substance.
(UK, archaic) Expressing astonishment.