Senpai means Teacher or Mentor in Japanese. The word is most commonly used by annoying as fuck weeaboos, making many people cringe when said out loud
Japanese School Student: "Good morning Senpai"

Filthy Weeaboo Casual: "NOTICE ME SENPAI NOTICE MEEEE"
(Everyone within a hundred foot radius begins to speed walk in the opposite direction)
by Th3rd July 21, 2015
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It originates from anime and manga. It's someone older than you. Someone you look up to. If they give the slightest attention to you, you sort of explode. They are just really admired by you and if you are a senpai, bask in it!
"Senpai actually said hi to me today!"
by bonerdict-cumberbatch July 1, 2013
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Senpai is a Japanese way to call someone older or someone more experienced than you. Usually it’s in anime and manga. Some people who are considered yandere will call their lover “senpai
This is from an anime OHHC
Mori-senpai, can I have some cake?”
by MyLifeIsAMess August 15, 2019
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is someone who is older than you, it is considered respectful in japan to call your elder peers "Senpai".
"Senpai..! Wait for me, Senpai!"
by Psycho_Hacker April 15, 2015
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The Japanese word 'senpai' means someone that is older than you or has more experience than you. The word 'senpai' has nothing to do with love.
''Senpai is teaching us something new in maths!'' 「先輩は私たちに数学の新しいことを教えてくれます!」
`Senpai wa watashitachi ni sūgaku no atarashī koto o oshiete kuremasu!'
by Yumeko <3 October 29, 2020
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A word that means upperclassman. It has no sexual meaning whatsoever, people are just stupid
"Today Tamaki-Senpai is gonna help teach me the piano!!"
by Its a fucking word April 19, 2021
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Senpai means some one older then you, or a crush that will never notice you because they are so friggin' clueless! So me.
NOTICE ME SENPAI! NOTICE ME!!
//chases goose around yard
by Ender Senpai May 24, 2015
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