The initial idioms of the letter U

upset	upshot of
upshot	upside
upside the head	upside-down
upskirt	upstairs
uptake	uptight
up-to-date	up-to-the-minute
upwards of	upwardly mobile
upward	urban legend
urge	urge along
urge forward	urge on
urge to do	urp
us	use a sledgehammer to crack a nut
use as	use as an excuse
use before	use by
use every trick in the book	use for