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The act of trading up an item for something else slightly better, even though what you have is perfectly good.

A small bump in features, performance or design that usually includes a hefty repeat purchase.
1. "When I saw the new iPod Nano had video recording, I knew I needed a bumpgrade from my old one".

2. "I was sick of always charging my old cell phone, so instead of buying a battery, I did a bumpgrade to the next newer model".
by StormWard June 29, 2010
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