Collins Chinese Dictionary Plus (3rd edition), 2011:
pessimistic [pɛsɪˈmɪstɪk]
adj
[+ person, attitude] 悲观(觀)的 bēiguān de
- to be pessimistic about sth
对(對)某事感到悲观(觀) duì mǒushì gǎndào bēiguān
在这些条目还发现'pessimistic'：
在英文解释里：
bearish
- dark and gloomy
- defeatist
- despairing
- doom and gloom
- doom-monger
- doomster
- fatalistic
- give up hope
- gloomy
- lose hope
- negative
- negatively
- negativity
中文：