こっそり (translations)→ creep discreetly furtively privately sott-voce stealthily surreptitiously unperceived unseen
ころりと (translations)→ all suddenly
しずかな (translations)→ peacefulness quiet still
しみじみ (translations)→ appreciatively good incredulously
しんみりと (translations)→ sadly softly
じっと (translations)→ absolutely becalmed carefully close closely courteously hard intently keenly long motionless motionlessly openly patiently pretty sharply silently simply sit solemnly square steadily steady straight stricken thoughtfully through tight unwaveringly
すぐにでも (translations)→ instantly soon
そうっと (translations)→ cautious gently
そっと (translations)→ calmly cautiously covertly delicately ease furtive gingerly guardedly lightly little loosely politely quick quickly secretly slight slowly stealthy tenderly tentative
ただじっと (translations)→ attentive just
ひそかに (translations)→ mentally private unadvertised
ひっそりと (translations)→ secluded unassuming
ぼそっと (translations)→ flat impassively languidly stolidly
ぼそりと (translations)→ forlornly gravely
ぽつりと (translations)→ briefly flatly haltingly hesitantly laconically shortly
ものしずかに (translations)→ equably
やおら (translations)→ abruptly before presently then till
穏やかに (translations)→ amicably benignly cool kindly lazy placidly sensibly
甘んじて (translations)→ meekly peaceably
胸のうちで (translations)→ inwardly mental
声を抑えて (translations)→ soft-voiced
静かな (translations)→ pacific silken slumberous voiceless
静かに (translations)→ composed enjoy leisure peaceful
淡々と (translations)→ blithely casually dully evenly indifferently levelly matter-of-factly philosophically
黙って (translations)→ blankly dumbly merely say silence silent wordlessly
目立たないように (translations)→ unobtrusive