You can use first or firstly to introduce the first point in a discussion, the first of a series of questions or instructions, or the first item in a list. First, mix the eggs and flour. There are two reasons why I'm angry. Firstly you're late, and secondly, you've forgotten your homework.
What can I say instead of firstly?
initially originally
-------------- --------------------
primitively beforehand
from the start off
formerly radically
first of all before anything else
Can you say Firstly Secondly Thirdly?
You should use first, second, and third to show textual enumerations in your writing. Many authorities prefer first, not firstly, even when the remaining items or points are introduced with secondly and thirdly.
Can you start an email with firstly?
@TusharDiwan: No. Firstly is normally used to introduce points in an argument/explanation. In your scenario, you should go with first .
Is it correct to say firstly?
Even though they are both adverbs, 'first' and 'firstly' are hardly interchangeable in all situations: we never say “I firstly noticed it yesterday." One might say "firstly, what are you doing in my home?" or "firstly, I hope you have insurance"—but if you want to avoid criticism, 'first' is the best bet for most