blurt out
Intermediate (B1)neutral
To say something accidentally before you have time to think about whether you should.
"She blurted out the surprise party details before anyone could stop her."
Hear it in context

Cultivating Awe & Emotional Connection in Daily Life | Dr. Dacher Keltner
Andrew Huberman · 14:49
Don't blurt out.

the BEST way to improve English speaking skills | 4.5 Hours of Super Sentences speaking practice
English is EZ with Connor · 252:53
but no cigar remember blurt out blurt out it means to say

Is Rosie DiMare Jealous of Kelsey Swanson? "Of Course" | RHORI After Show (S1 E7) Part 2 | Bravo
Bravo · 8:32
Like you just like blurt out.

CORTIS Reveal Uncomfortable Truths in the Hot Seat | Vanity Fair
Vanity Fair · 9:40
somehow like nervous you blurt out weird stuff.

It’s Clear What Is Actually Going On…
Tucker Carlson Network · 3:35
and they just blurt out what they think.