non·cha·lant /ˈnɒnʃələnt $ ˌnɑːnʃəˈlɑːnt/ adjectiveadjDON'T CAREbehaving calmly and not seeming interested in anything or worried about anything 若無其事的;毫不在乎的‘Has he got a girlfriend?’ Jill asked, trying to sound nonchalant. “他有女朋友嗎?”吉爾裝出無所謂的樣子問道。
—nonchalance noun [uncountableU]
—nonchalantly adverbadvHe smiled nonchalantly. 他毫不在乎地微微一笑。