bare usually means really or very using the language of scottish some would say. not all people use it but it can be used a lot by what we call chavs and roadmen
road man- ‘it’s bare cold outside fam’
chav- ‘you look bare ugly today luv’
UK/Roadman (South London) way of saying a lot/a lot of. (or so as in a plus)
Joshua: Oi, fam! Man got bare vexed the other day when man's Samsung got jacked you kno'?
Bryan: Yeah fam, I get you. 'Coz all these moist little wastemen in the ends are jackers you kno'.