いつまでも (translations)→ always continually continue eternal forever incessantly indelibly interminably long remain still
くりかえし (translations)→ cycle often regularly series
しきりに (translations)→ 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 (translations)→ frequent perpetually
たえず (translations)→ ceaselessly constant endless invariably permanently perpetual
やかましく (translations)→ exactly raucously riotously strictly
延々と (translations)→ eternity lengthy
何度も何度も (translations)→ umpteenth
際限もなく (translations)→ indefinitely unending
執拗に (translations)→ consistently determined dog-like doggedly insistent obstinately persistent relentlessly steadily stubborn stubbornly tenaciously
