whack up
B2 informal separable transitive
In simple words
To raise a price or amount by a lot; or to split something and share it between people.
Meanings
1 B2
idiomatic
informal
(British informal) To increase a price, volume, or amount suddenly or dramatically.
"The landlord whacked up the rent by thirty percent without any warning."
Grammar: separable
2 C1
idiomatic
informal
(British informal) To divide something and share it among people.
"They decided to whack up the winnings equally between the four of them."
Grammar: separable
Usage notes
The 'increase' sense is primarily British informal and often carries a negative tone, implying an unwelcome or sudden rise. The 'divide and share' sense is also British and informal. Not used in formal writing.
Commonly used with
price volume rent rate profits bill
Forms
Base
whack up
I/you/we/they
3rd person
whacks up
he/she/it
Past simple
whacked up
yesterday
Past participle
whacked up
have + pp
-ing form
whacking up
continuous
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