Firstly

/ˈfɜːrstli/

Meaning & Definition

adverb
used to introduce the first point or reason in a list or series.
Firstly, we need to address the issue of funding.
indicating the beginning of a sequence of points.
Firstly, I would like to thank everyone for coming.
used as a transition to start a discussion or explanation.
Firstly, let’s review the agenda for today’s meeting.
marking the initial stage before additional points are made.
Firstly, we should consider the pros and cons of the proposal.
serving to emphasize the importance of the first point in argumentation.
Firstly, you must understand that this is a critical decision.

Etymology

From Old English 'fyrst' + '-ly'.

Common Phrases and Expressions

first and foremost
Primarily or most importantly.
first things first
Giving priority to the most important tasks or considerations.

Related Words

first
The ordinal number before second.
initially
At the beginning.

Slang Meanings

First off
First off, let's talk about what we need.
To kick things off
To kick things off, I have a few announcements.