secondly
adv. sent.adv. used to introduce the second point in a list or a series of reasons. You use this when you have already said 'first' and want to move to your next idea.
adv. in the second place in a sequence or list. Used to introduce a subsequent point or argument after an initial one has been established.
Secondly, we need to consider the cost of the project.
First, the plan is too expensive; secondly, we do not have enough staff to finish it on time.
The committee rejected the proposal because it lacked clear objectives and, secondly, because the projected timeline failed to account for seasonal delays in the supply chain.
From second + -ly.
Typically used at the beginning of a sentence or clause to transition between points.
Second, ... Secondly, ...First, ... Secondly, ...Learners should maintain consistency in a list; if starting with 'First', use 'Secondly' rather than mixing 'Second' and 'Secondly'.