an event or occurrence

altogether it was an eerie happening

a partly improvised or spontaneous piece of theatrical or other artistic performance, typically involving audience participation

a multimedia happening

fashionable; trendy

a happening neighbourhood

take place; occur

two hours had passed and still nothing had happened

the accident happened at 7.40 a.m

the afternoon when the disturbance happened

find or come across by chance

I happened on a street with a few modest restaurants

Mike played football as a boy and happened on cycling by accident

be experienced by (someone); befall

the same thing happened to me