informally
🇬🇧/ɪnˈfɔːməli/ 🇺🇸/ɪnˈfɔːrməli/
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in a way that is not formal or official: They've agreed informally to separate.
adverb [方式副词] 非正式地;不拘礼节地
He began informally to handle Ted's tax affairs for him. 他开始非正式地为特德管理他的税务。