おとなしく (translations)→ calmly dutifully frosty humble impassively just meekly mild obediently passively patiently quiet receptive smartly tamely
しずかに (translations)→ peace softly
じっと (translations)→ absolutely becalmed carefully close closely courteously hard intently keenly long motionless motionlessly openly pretty quietly sharply simply sit solemnly square steadily steady still straight stricken thoughtfully through tight unwaveringly
そっと (translations)→ cautiously covertly delicately discreetly ease furtive furtively gently gingerly guardedly lightly little loosely politely quick quickly secretly slight slowly stealthily stealthy tenderly tentative
ただ (translations)→ all although anyway bum but except however instead meaningless merely nothing only perhaps plain purely quite rather really sheer solitary sometimes that though totally
ひそかに (translations)→ mentally private privately surreptitiously unadvertised
ひそやかに (translations)→ guiltily
ぼんやりと (translations)→ absently abstraction barely blankly distant distantly dully ghostlike hazily idly indefinite lazily listlessly miserably spectral vacantly
まじまじと (translations)→ curiously earnestly fixedly soberly speculatively
音もなく (translations)→ mutely soundlessly
声もなく (translations)→ silent wordlessly
静かに (translations)→ composed enjoy leisure peaceful
無言のまま (translations)→ inarticulate silence wordless
黙って (translations)→ dumbly say
黙りこくって (translations)→ grim sullen taciturn
冷静に (translations)→ calm clearly coolly critically dispassionately evenly rational rationally reservedly