you'll catch your death

you'll catch your death

You'll get sick if you do what you're about to do (often, go outside without being properly dressed). A shortened version of "you'll catch your death of cold." You can't go out without a coat at this time of year, you'll catch your death!
See also: catch, death

you'll catch your death (of cold)

A warning issued (often hyperbolically) to one deemed vulnerable to becoming ill with the common cold. You'll catch your death of cold if you leave the house with wet hair—it's freezing outside! You'll catch your death in this weather if you don't put on a coat!
See also: catch, death
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in classic literature ?
"You'll get drenched to the skin; you'll catch your death!" said Peechy Prauw affectionately.
On Broad Street, while redblooded males ogled the seminaked bodies before them, I tutted: "You'll catch your death, my girl" and "for goodness sake, do up those buttons."
Come on, it's winter ladies, you'll catch your death!
"Put your cardi back on, you'll catch your death from exploitation," boom those who hate it.
Phrases such as: 'are you really going out like that?' and 'wear a coat, you'll catch your death' slip effortlessly from your lips.
You'll catch your death. I'll fix us some lunch.' 'But it's dark out,' she objected.
But while it was a balmy 23C in Miami yesterday, in London on Thursday night it was only 2C, so word of advice, Justin - your buff new look is impressive but put a shirt on or you'll catch your death.
One friend reflected that she and my father had "lived great lives", another more simply that "the world is less of a place", while a third recounted that when she visited my mother in the last fragile weeks of her life, Rene drifted out of sleep, opened her eyes and muttered: "You should be wearing a jumper, you'll catch your death of cold."
"You'll catch your death of a cold" was a literal statement a generation before it became a comical clich.
It just shows what your mum used to say about 'cover up or you'll catch your death of cold' is a load of rubbish!" The T-shirt and shorts helped to raise Parry's national profile long before he moved into management.
It maybe summer, but this is Yorkshire -and you'll catch your death of cold wandering about in that flimsy nightie.
John worked until late into the nights to finish his design - You'll Catch Your Death Out There.
Polly Hopkins: You'll catch your death going out like that!
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