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."
inseparable
sack up
B2 slang inseparable intransitive
Vulgar informal American expression urging someone to be courageous or stop being weak.
In plain English
Stop being scared or weak and be brave.
What does "sack up" mean?
One main meaning — here's how to use it.
Usage tip
Vulgar slang, primarily American. Often used as a blunt imperative. Can be offensive; use with caution. Derived from crude anatomical reference.
Words that pair with "sack up"
Natural word combinations native speakers use most often.
already and deal with it and face it
How to conjugate "sack up"
The five tense forms you'll use most often.
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
Hear "sack up" in the wild
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