they became too confident and ＿＿（无拘无束的）at last they lost to us.问题写在标题上
问题描述：
they became too confident and ＿＿（无拘无束的）at last they lost to us.
问题写在标题上
答
they became too confident and ＿unfettered＿（无拘无束的）at last they lost to us.