There's a word for people who lie (liar), but not for people who tell the truth, amirite?

"I'm not saying you're a truther"

The word is "honest."

There is no word because it is assumed that regular people tell the truth - so only the opposite requires a "name"

Soothsayer we just don't ever use it

You mean veracious?

I ain't sayin you're a truther

Guess you've never watched Drake & Josh...

Truther

I have heard the term "Truther" but it is usually with another word before it that tends to give it a negative connotation still...