いつまでも の訳語→ always continually continue eternal forever incessantly indelibly interminably long remain still
くりかえし の訳語→ cycle often regularly series
しきりに の訳語→ bitterly busily conjecture copiously desperately eagerly earnestly fluently frequently furiously hard imperiously insistently intently keep much rapid steadfastly terribly urge urgent urgently variously
しじゅう の訳語→ frequent perpetually
たえず の訳語→ ceaselessly constant endless invariably permanently perpetual
やかましく の訳語→ exactly raucously riotously strictly
際限もなく の訳語→ indefinitely unending
執拗に の訳語→ consistently determined dog-like doggedly insistent obstinately persistent relentlessly steadily stubborn stubbornly tenaciously