Casual

beiläufig

(happening by chance)

gelegentlich

(coming without regularity; occasional or incidental)

gelegentlich

(employed irregularly)

gleichgültig

(careless)

informell

(informal, relaxed)

leger

(informal, relaxed)

leger

(designed for informal or everyday use)

sportlich

(designed for informal or everyday use)

ungezwungen

(informal, relaxed)

ungezwungen

(designed for informal or everyday use)

unmethodisch

(happening or coming to pass without design)

zufällig

(happening by chance)