a way to measure how much something sucks; the higher the suck factor, the suckier it is
The party I went to last night was okay, but the music was a huge suck factor.
A part of something that brings down the overall enjoyment level of the whole.
- Making sure that my grammar is correct is gonna be a huge suck factor on this paper.
- I had a good time at the party last night, but the crowd was a huge suck factor.