firstly

Letters that make firstly

s, f, l, r, t, i, y are letters that make 'firstly'

IRS, IR, fir, first, Ir, Tl are words within 'firstly'

1 possible definitions for 'firstly'

Under this definition, firstly is an adjective and has the following properties:

first, foremost, first of all, first off have the same meaning as 'firstly'