Переклад англійською з японської: 粛々たる
Словник: main
粛々たる
形容詞
1 calm,  gentle,  placid,  quiet,  serene,  silent,  smooth,  soft,  soundless,  still,  tranquil,  unagitated,  unruffled. 
2 clandestine,  cloak-and-dagger,  furtive,  hole-and-corner,  hugger-mugger,  hush-hush,  quiet,  secret,  silent,  sneak,  sneaky,  soundless,  stealthy,  still,  surreptitious,  undercover,  underground. 
4 hushed,  muted,  peaceable,  peaceful,  placid,  quiet,  restrained,  silent,  smooth,  soundless,  still,  subdued,  tranquil,  unruffled.