for one

English

A shortening of for one thing or for one person

As the first in a number of examples or reasons.
I don't like this carpet – for one, it doesn't suit our lounge room at all and it's also much too expensive.
As a single given example, often the most obvious or important one and almost certainly enough to sway the argument, of several reasons for something.
I am ashamed of you, son. We do not condone theft or violence, Ryan. It is, for one, illegal, and may as such land you in jail or lead to other punishments.
As one person among other people who may not hold the same opinion.
I know you may not agree but I, for one, think we should get rid of this unfair piece of legislation.
- 2013 August 14, Daniel Taylor, The Guardian‎^[1]:
  Hart, for one, will not remember the night for Lambert's heroics. Morrison, not closed down quickly enough, struck his shot well but England's No1 will be aghast at the way it struck his gloves then skidded off his knees and into the net.

as the first in a number of examples

as a single, most important example in a number of examples

as one person among other people