nervy

1. ADJ If you say that someone is nervy, you mean that their behaviour is bold or daring. 無(wú)畏的; 無(wú)懼的[美國(guó)英語(yǔ)]

John liked him because he was a nervy guy. 約翰喜歡他，因爲(wèi)他是個(gè)不怕事的家夥。