# How to write _ in LaTeX without it complaining

How can I write _ in LaTeX without it trying to force me to use math mode, which I do not want to use, as it will (after compilation) not display an _.

If you're absolutely certain that you'll never need to use _ in math mode -- where it serves to initiate a subscript term -- you could proceed by changing the character's category code to "12" ("other").
\documentclass{article}
\catcode\_=12 % change catcode of "_" to "other" (no. 12)
`