The term 'blurt out' can be defined as to SAY something suddenly and without thinking. This term can be expressed in a variety of ways, such as BLAT (4 letters), DIVULGE (7 letters), UTTER (5 letters), EXCLAIM (7 letters), SAY (3 letters), VENT (4 letters), SPILL (5 letters), LETSLIP (7 letters), and MISSPEAK (8 letters). Each of these words has a slightly different connotation, but all of them imply that the speaker is speaking without considering the consequences of their words.