ひたすら の訳語→ all anxiously avidly doggedly eagerly earnestly intently just literally stolidly undeviatingly unflagging
一途 の訳語→ particularly passionate very
固く の訳語→ absolutely heavily rigid tensely tightly
思いつめた の訳語→ burning desperate serious troubled
心からの の訳語→ dyed-in-the-wool genuinely gratuitous heart-felt heartful honest real true unalloyed warm
心底から の訳語→ fear genuine infinitely solid truly
真剣な の訳語→ anguished deeply eager grave intense nervous sincere
熱心に の訳語→ actively alertly assiduously attentively busy closely faithfully fervently hard lively seriously steadfast vigorously