Letter on position 1 (r) changed: 7 words bumbles fumbles humbles jumbles mumbles numbles tumbles Letter on position 2 (u) changed: 2 words rambles rembles Letter on position 3 (m) changed: 1 word rubbles Letter on position 4 (b) changed: 1 word rumples Letter on position 7 (s) changed: 2 words rumbled rumbler