let the cat out of the bag (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">let the cat out of the bag</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for blab that I've seen before include "Tell tales" , "Tells tales" , "Let the cat out of the bag" , "Let slip" , "Spill the beans" .)
(Other definitions for disclose that I've seen before include "Betray" , "Make (secret) known" , "Sold ices (anag)" , "Divulge, reveal" , "broadcast" .)