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Verb:
trade up
Exchange
something for a
better
or more
expensive
version
"We
traded
up from our
small
apartment
to a
house
"
Derived forms:
trades up, traded up, trading up
trade route
trade school
trade secret
trade show
trade stoppage
trade surplus
trade union
trade union movement
trade unionism
trade unionist
trade up
trade wind
tradecraft
trade-in
trade-last
trademark
trademarked
tradeoff
trade-off
trader
trades union