1. optimism
    • 彼は何事に対しても楽観的だ
    • He 「takes an optimistic view [looks on the bright side] of everything./He is optimistic about everything.
    • 事態は楽観を許さない
    • The situation is 「very unpromising [precarious]./The situation does not allow much room for optimism.
  1. 楽観主義optimism
  1. 楽観主義者an optimist