| Idiom | Meaning | Example | 
| up shit creek [B] | 
in a bad situation, in a fix
 | 
If we lose our matches, we're up shit creek. We need a campfire.
 | 
| up the ante | 
increase the payment, increase the deposit
 | 
If they up the ante to $50, I won't enter the hockey pool this year.
 | 
| up the creek | 
in a predicament, in difficulty, in a jam
 | 
Without insurance, you could be up the creek if there's a fire.
 | 
| up the stump [B] | 
pregnant, a bun in the oven
 | 
She didn't use a contraceptive,  so she's up the stump again.
 | 
| up the wahoozey | 
a lot, more than needed, coming out of our ears 
 | 
The Burnsides are so rich they have money up the wahoozey!
 | 
| up to | 
planning, doing
 | 
What are you up to? Are you planning another fishing trip?
 | 
| up to date | 
recent, current
 | 
The radio reports events as they happen. The news is up to date.
 | 
| up to it | 
have enough energy to do it, up for it
 | 
"Would you like to play another game of badminton?" "No, I don't think I'm up to it."
 | 
| up to my ears | 
have too many, coming out of our ears
 | 
You're selling books? I'm up to my ears in books!
 | 
| up to no good | 
doing bad things, causing problems
 | 
Tom's up to no good these days - stealing drugs and selling them.
 |