sack up
B2 slang inseparable intransitive
In simple words
Stop being scared or weak and be brave.
Meanings
1 B2
idiomatic
slang
To summon courage; to stop being afraid or complaining and act decisively.
"You've been avoiding this conversation for weeks — just sack up and talk to her."
Grammar: inseparable
Usage notes
Vulgar slang, primarily American. Often used as a blunt imperative. Can be offensive; use with caution. Derived from crude anatomical reference.
Commonly used with
already and deal with it and face it
Forms
Base
sack up
I/you/we/they
3rd person
sacks up
he/she/it
Past simple
sacked up
yesterday
Past participle
sacked up
have + pp
-ing form
sacking up
continuous
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