non·cha·lant /ˈnɒnʃələnt $ ˌnɑːnʃəˈlɑːnt/ adjectiveadj DON'T CAREbehaving calmly and not seeming interested in anything or worried about anything 若无其事的;毫不在乎的 ‘Has he got a girlfriend?’ Jill asked, trying to sound nonchalant. “他有女朋友吗?”吉尔装出无所谓的样子问道。
—nonchalance noun [uncountableU]
—nonchalantly adverbadv He smiled nonchalantly. 他毫不在乎地微微一笑。