To blurtblurt or "blurt out"blurt out.
from Wiktionary:
blurt [Verb]:
To utter suddenly and unadvisedly; to speak quickly or without thought; to divulge inconsiderately — commonly with out.
- Please think about your reply and don't just blurt out the first thing that comes to mind.
Further to comments to the OP: to "put your foot in your mouth" is to say something embarrassing, and to "spill the beans" is to tell the facts about something (presumably intentionally). To let something slip is to unintentionally reveal a fact which you should have kept secret -- is this the meaning you wanted?
- to "put your foot in your mouth" is to say something embarrassing, and
- to "spill the beans" is to tell the facts about something (presumably intentionally).
- To let something slip is to unintentionally reveal a fact which you should have kept secret — is this the meaning you wanted?
