苦く労ろう性しょう

noun, noun which may take the genitive case particle 'no', na-adjective

nervous temperament; worry-prone nature; pessimistic disposition

Describes a person who tends to worry excessively, overthink, or expect the worst. Often used to characterize someone's inherent nature.

• 彼かれは苦く労ろう性しょうで、小ちいさなことでもすぐ心しん配ぱいする。

  He has a worry-prone nature and gets anxious over even small things.

• 苦く労ろう性しょうの人ひとは、なかなか楽らっ観かん的てきになれない。

  People with a pessimistic disposition find it hard to be optimistic.