さりげなく (translations)→ absently careless carelessly casual casually casualness covert covertly delicately discreet discreetly effortlessly everyday innocently matter-of-factly nonchalantly restrained simply unobtrusively unselfconsciously vague
ぱっとしない (translations)→ failing hopeless uninspirational unspectacularly
小さく (translations)→ briefly distant little shortly slightly small softly tiny weakly
目立たない (translations)→ indistinctive medium obscure quiet unemphatic