Casual: a person who does something irregularly: "a number of casuals became regular customers” Casual gamer: *can only be defined by urban dictionary: “A person who plays games but aren't competitive. Usually they are just there to be social and have fun but if they end up losing in the game they wouldn't mind. They don't put in a lot of effort to try to win.” With your example, there too many variants to back up your claim. A raid is a 6 person activity. Comp is a 4 person activity. Kind of hard to call out A player for being A casual if they do not have the team to play said activities. Ie they can be hardcore solo players that intelligently avoids the headaches of lfg. They also may not like the competitive aspect of comp. Ie a hardcore pve player. Just like a hardcore pvp player. “Casuals” to me, are the players that just play because.. their friends play said game but do not really care about the finite details of a game. Destiny being a good example. Do they care about their builds, the meta weapons, the team synergy etc.. Ie are they casual, or do they dive deep into the game that rewards the aspect that keeps them coming back.