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A word you use when you're debating something and they say most or mostest
Boy: I miss you more
Girl:I miss you the most!
Boy: I miss you the mostest

Girl: I miss you the mostER
Moster by Jinglebells2020 December 7, 2020
A word used when a person doesn’t know what a dictionary is.
Moster by Arm2007 January 7, 2021
Basically ghosting but worse, mostly found on tinder. Tries to get close to you and lies about being interested just for intimate relations then proceeds to block and unadd you from everything.
" remember that guy on tinder who i really liked? Yeah my best friend just told me he was a moster , damn why do i always have to be into douchebags"
Moster by Evillgummyworms666 February 9, 2021
(Noun) A student who uses the Mos debit card to save money for college. Generally the coolest friend in the group and somehow always matches their card with their OOTD. Savvy and thrifty, but definitely not cheap.
Student 1: Whoa, Paige just told me she landed $12k in scholarships for this year!
Student 2: Not surprised, I'm pretty sure she's a Moster.
Moster by itsmemeg November 24, 2021
Moster stands for snazzy
“He is a moster manmeaning “he is a snazzy man”
Moster by Mrmosterman December 6, 2022