adjective

uk/ˌpes.ɪˈmɪs.tɪk/

thinking that bad things are more likely to happen or emphasizing the bad part of a situation:

The tone of the meeting was very pessimistic.

pessimistic about The doctors are pessimistic (= not hopeful) about his chances of recovery.

uk /presˈtɪdʒ.əs/

very much respected and admired, usually because of being important:

a prestigious university

uk /ˌben.ɪˈfɪʃ.əl/

helpful, useful, or good:

Only some bacteria are harmful - many are beneficial.

From our point of view, these changes will be beneficial to the company.

adjective

uk /ˈkɜː.ti.əs/

polite and showing respect:

Although she often disagreed with me, she was always courteous.

Synonym

well mannered