“Firstly, secondly, thirdly” is grammatically acceptable, but repeated ordinal adverbs can sound mechanical. In most modern writing, “first, second, third” is simpler. You can also vary the sequence with phrases such as “to begin with, next, finally” when you want smoother transitions.
Sequence Alternatives at a Glance
- First, second, third
- First of all, next, finally
- To begin with, then, finally
- To start with, next, lastly
- Initially, subsequently, finally
- In the first place, in the second place, in the third place
- One point is, another is, a final point is
- First, additionally, finally
- At the outset, then, ultimately
- The first reason, the second reason, the third reason
- One, two, three
- For one thing, for another, finally
Which Sequence Works Best?
- Most essays and reports: “First, second, third.”
- Process or instructions: “To begin with, then, finally.”
- Formal chronological account: “Initially, subsequently, finally.”
- Arguments without obvious numbering: “One point is, another is, a final point is.”
- Presentation or slide: “One, two, three.”
First, second, third
The simplest direct replacement and suitable for essays, reports, and presentations.
Example: “First, we need to identify the problem; second, assess the options; third, agree a plan.”
First of all, next, finally
Natural when the final point is also your conclusion.
Example: “First of all, consider cost; next, look at feasibility; finally, compare the risks.”
To begin with, then, finally
Smooth and conversational, especially in presentations or explanatory writing.
Example: “To begin with, define the aim; then collect the data; finally, interpret the results.”
To start with, next, lastly
A slightly less formal sequence that works well in instructions.
Example: “To start with, create an account; next, verify your email; lastly, choose your settings.”
Initially, subsequently, finally
More formal and useful when describing stages over time rather than simply listing arguments.
Example: “Initially, demand was low; subsequently, uptake increased; finally, the service expanded nationally.”
In the first place, in the second place, in the third place
Formal and emphatic, but wordy. Use it when the numbered structure itself matters.
Example: “In the first place, the cost is high; in the second place, the timetable is unrealistic; in the third place, the benefits are uncertain.”
One point is, another is, a final point is
Useful when listing arguments without sounding like a numbered checklist.
Example: “One point is cost; another is accessibility; a final point is long-term maintenance.”
First, additionally, finally
Works when the middle point adds to the first rather than forming a strict sequence.
Example: “First, the proposal is affordable; additionally, it is easy to implement; finally, it has broad support.”
At the outset, then, ultimately
Best for a process or narrative that develops over time.
Example: “At the outset, the team focused on recruitment; then it refined the intervention; ultimately, it evaluated outcomes.”
The first reason, the second reason, the third reason
Clear when you are explicitly presenting several reasons for a conclusion.
Example: “The first reason is cost, the second reason is time, and the third reason is staff capacity.”
One, two, three
Very concise and effective in speech, slides, or strongly structured prose.
Example: “There are three priorities: one, reduce delays; two, simplify access; three, improve follow-up.”
For one thing, for another, finally
Conversational and useful when presenting supporting considerations rather than formal numbered steps.
Example: “For one thing, it saves time; for another, it costs less; finally, it is easier to maintain.”
Can You Mix “Firstly” With “Second”?
It is better to keep the pattern consistent. Use “firstly, secondly, thirdly” or “first, second, third” rather than mixing the two styles. “First, second, third” is usually cleaner.
Do You Need a Transition Before Every Point?
Not always. If headings, bullets, or paragraph structure already make the sequence clear, repeated transition words can make the writing feel over-signposted. Use them when they genuinely help the reader follow the logic.