Synonyms of pile up

Noun

1. pileup, collision

usage: multiple collisions of vehicles

Verb

1. accumulate, cumulate, conglomerate, pile up, gather, amass, increase

usage: collect or gather; "Journals are accumulating in my office"; "The work keeps piling up"

2. pile up, heap up, stack up, gather, garner, collect, pull together

usage: arrange into piles or stacks; "She piled up her books in my living room"

3. roll up, collect, accumulate, pile up, amass, compile, hoard, store, hive away, lay in, put in, salt away, stack away, stash away

usage: get or gather together; "I am accumulating evidence for the man's unfaithfulness to his wife"; "She is amassing a lot of data for her thesis"; "She rolled up a small fortune"