easygoing

/ˈiːziˌɡoʊɪŋ/
adjective
  1. Relaxed and not easily upset, worried, or annoyed; calm and tolerant.
    • The easygoing atmosphere at the picnic made everyone feel comfortable.
    • My dad is very easygoing and never gets angry about small mistakes.
    • She's an easygoing person who gets along with everyone in the office.
Antonyms