英语 idiom list

ugly American
ugly customer
ugly duckling
under a cloud
under a spell
under construction
under control
under erasure
under glass
under lock and key
under no circumstances
under one roof
under one's hat
under one's own steam
under one's thumb
under one's very eyes
under one's wing
under sail
under someone's nose
understand the assignment
under the carpet
under the covers
under the gun
under the hammer
under the illusion
under the impression
under the influence
under the mahogany
under the microscope
under the radar
under the rose
under the rug
under the saya
under the sheets
under the sun
under the surface
under the weather
under the wire
under way
undress with one's eyes
unicorn barf
unicorn puke
unicorn vomit
university of life
university of the streets
unknown quantity
unload
unmask one's batteries
uno ab alto
unplug
unring a bell
unsung hero
until hell freezes over
until one is blue in the face
until the cows come home
until the cows freeze over
until the last dog is hung
unto the ages of ages
unused to
up against
up against it
up a gum tree
up a height
up and at 'em
up and away
up-and-comer
up and coming
up-and-coming
up and down
up and running
up a tree
up for
up for grabs
up front
up hill and down dale
uphill battle
up in the air
up on
up one's own ass
up one's sleeve
up on one's ear
upon the instant
upon the tapis
upper crust
upper-crust
upper hand
upper storey
up poo creek
ups and downs
upset the applecart
up shit creek without a paddle
up shit's creek
up shit's creek without a paddle
up someone's street
up the ante
up the boohai
up the creek
up the river
up the wall
up the walls

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