Blurt
Part of speech: verb
Definition: To utter suddenly and unadvisedly; to speak quickly or without thought; to divulge inconsiderately — commonly with out.
Blunder
Part of speech: noun
Definition: A clumsy or embarrassing mistake.
Part of speech: verb
Definition: To make a stupid mistake.To move blindly or clumsily.
Example sentence: Every blunder behind us is giving a cheer for us, and only for those who were willing to fail are the dangers and splendors of life.