しかつめらしく (translations)→ gravely portentously primly
しかめつらしく (translations)→ formality thoughtfully
しみじみと (translations)→ feelingly forcibly keenly wistfully
じっと (translations)→ absolutely becalmed carefully close closely courteously hard intently long motionless motionlessly openly patiently pretty quietly sharply silently simply sit square steadily steady still straight stricken through tight unwaveringly
むっつりと (translations)→ brooding crossly glumly grimly meditatively moodily morosely sour unhappily
もったいぶって (translations)→ deliberate deliberately significantly stuffily
わざわざ (translations)→ bother calculated careful especially insist intentionally meaningful needlessly obligingly purposely special specifically
重々しく (translations)→ judiciously ponderously slowly stiff
真顔で (translations)→ dryly earnestly frankly genuinely serious seriously
物々しく (translations)→ importantly majestically