1. 长：lengthen 延长 | lengthily 长 | lengthiness 冗长

2. 长地; 絮叨地; 冗长地 (副)：lengthen 使加长, 使延长; 变长, 延长 (动) | lengthily 长地; 絮叨地; 冗长地 (副) | lengthiness 冗长 (名)

adv

1. in a lengthy or prolix manner

    e.g. the argument went on lengthily
           she talked at length about the problem

    Synonym: at length