さりげなく の訳語→ absently careless carelessly casual casually casualness covert covertly delicately discreetly effortlessly everyday inconspicuous innocently matter-of-factly nonchalantly restrained simply unobtrusively unselfconsciously vague
それとなく の訳語→ cautiously cunningly friendly generally gently little obliquely somehow subtly surreptitiously
気のきいた の訳語→ clever cleverly cute ingenious nice real solicitious swanky wise witty
慎重に の訳語→ careful carefully defensively deliberately measured patient slowly thoughtful thoughtfully warily