secondly[adverb]Synonyms: next, in the second place, second
[TahlilGaran] English Synonym Dictionary ▲
sec‧ond‧ly S3 /ˈsekəndli/
adverb [sentence adverb] used when you want to give a second point or fact, or give a second reason for something ⇒
firstly:
Firstly, they are not efficient, and secondly, they are expensive to make. [TahlilGaran] Dictionary of Contemporary English ▲