Upset the apple cart– to create difficulty
Under a cloud– If someone is suspected of having done something wrong, they are under a cloud
Under fire– If someone is being attacked and criticized heavily, they are under fire
Under your nose- If something happens right in front of you, especially if it is surprising or audacious, it happens under your nose
Up for grabs– If something is up for grabs, it is available and whoever is first or is successful will get it
Up to the neck– If someone's in something up to the neck, they are very involved in it, especially
when it's something wrong
Up a river without a paddle– If you up a river without a paddle, you are in an unfortunate situation, unprepared and with none of the resources to remedy the matter
Uncharted waters- If you're in uncharted waters, you are in a situation that is unfamiliar to you, that you have no experience of and don't know what might happen
Under lock and key- If something is under lock and key, it is stored very securely
Vale of tears- This vale of tears is the world and the suffering that life brings.
Velvet glove – This idiom is used to describe a person who appears gentle, but is determined and inflexible underneath. ('Iron fist in a velvet glove' is the full form.)
Vent your spleen – If someone vents their spleen, they release all their anger about something.
Vicar of Bray – A person who changes their beliefs and principles to stay popular with people above them is a Vicar of Bray
Vicious circle – A vicious circle is a sequence of events that make each other worse- someone drinks because they are unhappy at work, then loses their job… 'Vicious cycle' is also used.
Vinegar tits – A mean spirited women lacking in love or compassion.
Virgin territory – If something is virgin territory, it hasn't been explored before.
Voice in the wilderness – Someone who expresses an opinion that no one believes or listens to is a voice in the wilderness, especially if proved right later.
Volte-face – If you do a volte-face on something, you make a sudden and complete change in your stance or position over an issue.
Vultures are circling – If the vultures are circling, then something is in danger and its enemies are getting ready for the kill.