inattentively
/ˌɪnəˈtentɪvli/"Inattentively" means not paying attention or giving enough attention to someone or something.
adverb [方式副词] 不注意地；疏忽地
I sketched inattentively along the margins of my homework. 我一时大意，在我的家庭作业的空白处画起速写来。
