Without even thinking, I blurted out, “Ninety-five percent, easy.”
Well, I blurted out some of my dark history in Hallucinations, so much of it is known now.
I happened to run into the superintendent the day we got the news, and blurted out a question in an unguarded moment.
1570s, probably echoic. Related: blurted; blurting. As a noun, 1570s, probably from the verb.