the yarn is usually (today in most knitting magazines and ads) spelled quiveit. with a final t (to match how it said)

is one of the most expensive yarns i know of.. (and it is said to be one of the warmest animal fibers around)

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on the real question of the OP, i know the expression qui vive, but i don't think i have ever used my self! (not in writting or speaking!)

my other obsession