A fork of Rural Dictionary
"Yech" is a word people use when something is disgusting and grosses you out. Its not overly gross that'll cause you to heave but to the point that you really want to walk away.
"Yech, that frog is disgusting"
When your friends fucks up miserably when typing the word "heck"
Friend: "yech yeahhh" You: Dude what the fuck Friend: Sorry, I really fucked that up