go off half-cocked

go off half-cocked также go off at half cock  {v. phr.},  {informal}
Действовать или выступать не подготовившись заранее; делать что-л. слишком рано.
Bill often goes off half cocked.
Mr. Jones was thinking about quilting his job, but his wife told him not to go at half cock.
Категории: {informal} {v. phr.}

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