clumpyPronunciation: /ˈklʌmpi/Definition of clumpy adjective (clumpier, clumpiest) 1 (also clompy) (clompier, clompiest) British (of shoes or boots) heavy and inelegant: opaque tights and clumpy shoes 2forming or showing a tendency to form clumps: ultraviolet radiation penetrates the clumpy cloudsclumpy in other Oxford dictionaries Definition of clumpy in the US English dictionary