Gainsy 

an adjective used to describe someone who has made serious gains.

"Dang have you seen Tom lately, he is looking gainsy"

"Im feeling super gainsay after that gym sesh"

Gainsy by Scrotey mcboogerballs October 24, 2014

gains goblin 

A term used to describe a person or time commitment that interferes with one's potential to cultivate mass.

Yo, kevin be actin like a gains goblin when he wastes my time at the gym.

gains goblin by Brodin69420 August 26, 2015

Gains Goblin 

A person that stops a person, friend, Bro from obtaining their gains.

Joud, you ate my protein bar and hid my beef jerky! You're a Gains Goblin!!

Gains Goblin by Joud Rahal June 25, 2019

vegan gains

Noun 1: A gain in muscle mass attributed to the vegan diet.

Noun 2: A psychopath who hates when animals are killed, but threatens to kill random people.

1. Ya I'm really proud of the vegan gains I've been making as of late.

2. WHY DONT U WAKE UP ADN MAKE SUM FUKIN VEGAIN GAIIINS

vegan gains by "4ChanDOTgov" December 25, 2016

Gainsblocking 

When your girl is stopping you from making gains at the gym

“Yo bro you coming gym?”
“Nah I’m going out with my girl”
“She is gainsblocking you man!”

Gainsblocking by GymkingINYAMUM January 29, 2019

Gainzy

Looking muscular or aesthetic.

Ex.1: I love this shirt bruh. It makes me look so gainzy!

Ex.2: I gotta hit the gym, I'm trynna look gainzy in the club tonight Moe.

Gainzy by Professor Gainz December 20, 2016

gainsay 

Deny or contradict a statement or fact

None could gainsay him though the results of his tests were conclusive.

gainsay by talk2me-JCH2 June 11, 2023