1 B1 neutral
to gather into a heap or large amount
"Laundry piled up while I was away."
mixed
pile up
B1 neutral mixed transitive/intransitive
to accumulate in a heap or to increase until there is too much
In plain English
to collect more and more until there is a lot
What does "pile up" mean?
3 meanings, ordered from most common to least. Color-coded by CEFR level.
2 B1 idiomatic neutral
to increase until tasks, problems, or delays become difficult to manage
"Emails have been piling up since Monday."
inseparable
3 B2 idiomatic neutral
to crash into one another in a series of collisions
"Cars piled up on the icy motorway before sunrise."
inseparable
Literal vs figurative
Words literally mean
to form into a pile upward
Actually means
to collect more and more until there is a lot
Usage tip
Very common for physical objects, work, debt, traffic, and problems. Also used for multiple-vehicle crashes in some contexts.
Words that pair with "pile up"
Natural word combinations native speakers use most often.
work dirty dishes debt snow traffic problems
How to conjugate "pile up"
The five tense forms you'll use most often.
Base
pile up
I/you/we/they
3rd person
piles up
he/she/it
Past simple
piled up
yesterday
Past participle
piled up
have + pp
-ing form
piling up
continuous
Hear "pile up" in the wild
Listen to native speakers using "pile up" in real YouTube videos — click a clip to watch it on Looplines.
Other ways to say "pile up"
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Keep exploring
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