beneficial

Từ điển Oxford Advanced Learner 8th

bene·fi·cial AW BrE [ˌbenɪˈfɪʃl] NAmE [ˌbenɪˈfɪʃl] adjective ~ (to sth/sb) (formal)
improving a situation; having a helpful or useful effect
Syn: ↑advantageous, Syn: ↑favourable
•A good diet is beneficial to health.
•They finally came to a mutually beneficial agreement.
Opp: ↑detrimental

Word Origin:
[beneficial] late Middle English: from late Latin beneficialis, from beneficium ‘favour, support’, from bene ‘well’ + facere ‘do’.

Example Bank:
•I think it would be beneficial for each committee member to have a copy of the report.
•Some alternative treatments may prove highly beneficial.
•The arrangement was mutually beneficial.
•Lowering salt intake has a beneficial effect on blood pressure.
•Relaxation classes can be beneficial to people of all ages.
•The relationship was to prove mutually beneficial over the years.
•We only fund projects we consider to be socially beneficial.
•Work experience is usually highly beneficial for students.