こともなげに (translations)→ absently carelessly casually disinterestedly dismissive drily lightly tersely
ゆったりと (translations)→ heavily lazily leisurely loosely luxuriously relax relaxed slowly
よどみなく (translations)→ flowingly rolling smoothly straight
楽に (translations)→ comfortable easily easy well
気安く (translations)→ pleasantly
気持ちよさそうに (translations)→ gratefully happily
結構な (translations)→ handsome nice some succulent
相当の (translations)→ eminent good great long reasonable remarkable suitable useful
悠然と (translations)→ blithely calmly decorously gracefully stately