non-essential

Từ điển Oxford Advanced Learner 8th

▪ I. ˌnon-esˈsential f88 [non-essential non-essentials] BrE NAmE adjective usually before noun
not completely necessary
compare ↑essential  This is not as strong as inessential and is more common. Inessential can suggest disapproval.

Example Bank:
•They argue that killing seals for non-essential products cannot be justified.
 
▪ II. ˌnon-esˈsential noun usually plural
•I have no money for non-essentials.
Main entry: ↑non-essential_derived