どうでもいいような の訳語→ marginal unimportant uninteresting
のんびりした の訳語→ quiet sleepy slow trusting
のんびりと の訳語→ casual lazily lazy long peacefully
ゆうゆうと の訳語→ deliberately sedately
ゆっくり の訳語→ cautiously completely ease leisure length patiently slowly soft sound
ゆっくりと の訳語→ carefully distantly gradually pondrously restful slo-mo unhurriedly
ゆったりと の訳語→ comfortably heavily loosely luxuriously relax relaxed