The opposite to a dedicated video gamer.
Casuals are generally new to video gaming and have small experience.
Common definitions of Casual gamers are...

1. Don't play games that often
2. Gamers limited to a few popular mainstream genres (sports, racing, FPS) i.e Call of Duty. They don't expand to other types of genres (RTS, TBS, RPG) i.e any strategic game.
3. Gamers who play recreationally; for fun, rather then play more competitively
4. An insult used by more hardcore/elitist gamers who believe casuals are gaming scum (for most of these reasons)
5. Gaming Rookie or Newbie (not noob)
6. Those who play more simpler games (Facebook games, Flash games, Mobile Games, F2P). See 2. as well
7. Undedicated gamers (cheap computers and console/handheld users).

It's all to one's opinion and perspective.
Also, casuals sometimes get caught in the crossfire of ''The Great PC vs Consoles War'' where the ''PC Master Race'' duke it out with the ''Console Peasants''. Though it doesn't happen usually.
1. Dedicated: Been playing Skyrim daily, and I made huge progress in my game

Casual: I'm just past the beginning, I play just weekly.

2. Casual: Just got the new Call of Duty and NHL game

Dedicated: I've gotten the new Sid Meier's Civilization game.

3. Dedicated: I'm trying to practice to get in a decent MLG team.

Casual: I prefer to to play co-op with my friends, good luck getting to the MLG team.

4. Hardcore Gamer: I wish we had less casuals, who play small time games

Elitist Gamer: I had one on my LoL team, he was worser then nothing.

5. Dedicated: Coaching casuals!

Casual: Can you coach me, I'm new to this game.

6. Casual: Hey can you send me a gift on Farmville and Clash of Clans?

Dedicated: I don't play those types of games.

7. Dedicated: Whoo, my alienware computer and razor accessories just got delivered!

Casual: I'm settling down with my HP laptop from Target.
by Slim Cognito December 22, 2014

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anything not done hardcore
Briana: I just finished a triathlon
Luke: I swam the dead sea
Keith: I flew to the moon
Jawn: Fucking casuals, not hard enough.
by Pope Swagmaster February 08, 2015

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1. Chill and relaxed yet sophisticated and classy. Often referring to a state of being, way of life, or way to dress.

2. To be awesome while at the same time not caring at all.
Dave: Dude, that bbq and ladder ball with the bros was a great time.
Jake: Yeah dude, it was so casual.

Sam: Dude...the Vineyard Vines oxford/seersucker shorts combo is totally casual
by ODH1904 March 21, 2012

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A person, often when referring to gamers or any other target, that isn't really into it and only does this activity on an infrequent basis while being terrible at it. Can be described as weak sauce or non mlgpro.
Zac: "dude, I hate all those people who play farmville on facebook, they probably haven't ever picked up a controller in their lives"
Mike: "yea, they're a bunch of casuals"
by luckynacho February 24, 2010

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Any team Mystic player on Pokemon GO.
Look at all these mystics... CASUALS!
by BOKONDJI August 01, 2016

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Relaxed or chilled.

Jack Cooney invented it.
Eve maguire is not casual.
by Jjmccool October 13, 2014

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its casual, meaning "its whatever" or "its chill"; also can be used to describe random objects that you see
tom: oh sorry dude, i just stepped on your foot!
jim: its casual.

melinda: i didnt due my 20 page research paper thats due today. its casual.

julia: oh, casual airhorn
by eprof897 March 11, 2010

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