Mumm (?), v. i. [imp. & p. p.Mummed (?); p. pr. & vb. n.Mumming.] [D. mimmen to mask, mom a mask; akin to G. mumme disguise; prob. of imitative origin, and akin to E. mum, mumble, in allusion to the indistinctness of speech occasioned by talking from behind a mask. Cf. Mumble, Mummery.] To sport or make diversion in a mask or disguise; to mask.
With mumming and with masking all around. Spenser.