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upvote

[uhp-voht]
verb (used with or without object), up·vot·ed, up·vot·ing.
  1. to cast a vote in support of (an online comment, article, etc.) by clicking on an arrow or other icon, usually affecting the post's rank or position on a website.
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noun
  1. such a favorable vote: One of my posts is getting lots of upvotes.
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Origin of upvote

First recorded in 2005–10; up + vote
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018