いきおいこんで (translations)→ eagerly excitedly fervently
しきりに (translations)→ bitterly busily conjecture copiously desperately earnestly endlessly fluently frequently furiously hard imperiously incessantly insistently keep much often rapid steadfastly terribly urge urgent urgently variously
しげしげと (translations)→ carefully closely critically deliberately frankly frequent just lot minutely steadily thorough thoughtfully
じっと (translations)→ absolutely becalmed close courteously keenly long motionless motionlessly openly patiently pretty quietly sharply silently simply sit solemnly square steady still straight stricken through tight unwaveringly
じゅうぶん (translations)→ all enough perfectly sufficient wholly
ひたすら (translations)→ anxiously avidly doggedly earnest literally stolidly undeviatingly unflagging
ひたと (translations)→ fixed fixedly gaze squarely tensely
まじまじと (translations)→ blankly curiously soberly speculatively
キッと (translations)→ angrily beat fiercely meanly
一心に (translations)→ absorbed attentively relentlessly so
仔細に (translations)→ circumspectly
真顔で (translations)→ dryly genuinely gravely judiciously serious seriously
熱っぽく (translations)→ passionate passionately soulfully vehemently
熱心に (translations)→ actively alertly assiduously busy faithfully lively steadfast vigorously
夢中になって (translations)→ absorbedly eager