We couldn't find any words for the clue “Mummering” but these descriptions might be helpful:
- Lumbering (5 words, e.g. INEPT)
- Hammering (6 words, e.g. DEFEAT)
- Numbering (2 words, e.g. NUMERATION)
- Muttering (6 words, e.g. MURMUR)
- Murmuring (6 words, e.g. MURMUR)