casually
adverbUK /ˈkæʒ.u.ə.li/
US /ˈkæʒ.u.ə.li/
In a relaxed way, without much planning or worry.
She casually said hello as she walked past.
OTHER MEANINGS
2. In a way that is not formal or not for a special occasion.
He dressed casually in jeans and a T-shirt.
3. Briefly or without paying much attention.
I casually glanced at the newspaper headlines.
4. In a way that shows little concern or seriousness.
They casually tossed the ball back and forth.