じわじわと (translations)→ inchoate ponderously slowly steadily stealthily
一心に (translations)→ absorbed attentively busily eagerly fervently hard intently so tensely
仮借なく (translations)→ inexorable inexorably relentless
執拗に (translations)→ consistently determined dog-like doggedly endlessly insistent obstinately persistent stubborn stubbornly tenaciously
徹底的に (translations)→ definitely determinedly dramatically exhaustively really roundly ruthlessly strongly thoroughly worshipfully
容赦なく (translations)→ brutal harshly let-down mercilessly profoundly remorselessly surely unmercifully
しょっちゅう (translations)→ always constantly continually everlasting every so often frequent many often periodically perpetual regularly repeatedly use
