Definition
Firstly; before anything else. Often used to introduce the first in a list of points to be made in conversation.
Also Said As
- first
- firstly
- first of all
- first up
- all Thesaurus:firstly
How People Actually Use It
1. First of all 2. A phrase, used by the intolerably unimaginative, to introduce the first of at least two dull, idiotic points in his/her "argument."
"Angry moron #1: First off, buddy, you're way outta line. Second-- Some other guy: Sorry to interrupt, but you're putting me to sleep. I'm gonna go home and take a nap."
Source: Urban Dictionary