dumb crambo (uncountable)
- (games) A guessing game, similar to charades, in which players act out, or silently pantomime, words that rhyme with a clue word. The objective is to guess a concealed word that rhymes with the clue.
- 1942, Emily Carr, The Book of Small, "Visiting Matrons," 
- In early Victoria there were family evening parties to which the father, mother and all sizes of growing children went together and at which they played charades, dumb crambo, guessing games and forfeits.