Sempai is a Japanese honorific made popular in English dubs. It means 'mentor' or 'senior', depending on the context.

Not to be confused with the Malaysian street slang 'sempoi' or my friend Kambink_Sempoy.
"Ash introduced me to the blogging world, my blogger sempai" -Nadya
by Ash of Rilated April 11, 2005
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A term of respect for an some older than you. Typically someone you look up to.
There’s John-sempai he’s an Upperclassman
by [REDACTED] 029 July 16, 2018
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A Person who likes to watch anime and likes to play roblox at the same time. They usally are very covering and sometimes they may wear bags.
"Are you becoming a Sempai now?!"
by BellTheBigHead February 08, 2020
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An asian with a formal addiction to the activity of watching other people playing video games with the insight of entertainment. He is also asian.
Chris Chao is going to watch the Syndicate Project later, what an Asian Sempai Chow
by Zucko November 17, 2014
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