おとなしい (translations)→ calm civil cooperative docile obedient pacific peaceful small understated
温和な (translations)→ benignant soft warm-hearted
穏やかな (translations)→ easy fair fast halcyon peacefully piping quiet silken sunny tolerant
泰平な (translations)→ comfortable
平和な (translations)→ harmless tranquil
落ち着いた (translations)→ collected controlled handsome muted nerveless reasoned reserved secure unimpassioned