乐观主义者
lè​guān​zhǔ​yì​zhě

optimist

  1. 乐观 樂觀 lè​guān adjective
    optimistic
    optimistic; hopeful; full of confidence about the future
  2. 主义 主義 zhǔ​yì noun
    -ism; doctrine
    a systematic theory, school of thought, or social or political system
  3. 者 zhě affixnoun
    -er
    (bound form) used after a verb, adjective, or noun to represent the person or thing performing an action or possessing a quality; translates as "-er", "-ist", or "one who"