A Japanese honorific used when someone is older than you in age or they have more experience in a field than you. The opposite being Kouhai

It is usually a troup in anime or manga for a Kouhai to desperately seek their Senpai's attention but fails as because their senpai ignores them continuously.
"Kumagi-senpai was really nice to me today. He even offered me to go drinking with him after work!"
by tanabata March 13, 2016
Get a Senpai mug for your fish Manafort.
a Japanese word used to address or describe an upperclassman,senior, or someone of a higher age
Irena- senpai is my mentor
by japanese bookworm July 10, 2015
Get a Senpai mug for your buddy Paul.
(Japanese)An Upperclassman. Used in relation to fellow classmates of higher level or age. It can be used like -chan or -san as well as by itseld. I.E.: "Urameshi-senpai" or just "senpai"
"Sempai! You're going to be later for class!"
by Sashiro September 27, 2004
Get a Senpai mug for your father-in-law Vivek.
In Japan, senpai (先輩) is a mentor or senior. "Senpai" is roughly equivalent to the Western concept of a mentor, though it does not imply as strong a relationship as these words mean in the West, and the term is used more widely and with greater "give" then the western equivalent term. More simply, it can be translated as "Senior" or "Elder"
"I wonder if senpai is going to teach me that new fighting technique today?"
by Aidensman February 05, 2015
Get a Senpai mug for your boyfriend Manafort.
A word many people who are just becoming weebs think means you are crushing hard on the target person, when in actuality means upperclassman or one who is older than you.
I just want to sex him so bad because he is my senpai!
Oh hey there senpai why are you down at the first year classrooms, being a second year, and all?
by Wattman May 19, 2018
Get a Senpai mug for your fish Larisa.
Pronounced sen - pie. Also known as Sempai.
A Japanese term used to address someone higher than you politely. E.g. if you are in 4th grade, then anyone in 5th grade or higher is you senpai.
The previous definition is a reference to animated game, Yandere (Yaan - dah - reh) Simulator.
Senpai just finished his/her HSC (higher school certificate), I hope I'll do well when i take my HSC in a few years time.
by Soulfinder6546 September 14, 2015
Get a Senpai mug for your coworker Larisa.