Much'ness noun Greatness; extent. [ Obsolete or Colloq.] « The quantity and muchness of time which it filcheth.» W. Whately. Much of a muchness , much the same. [ Colloq.] 'Men's men; gentle or simple, they're much of a muchness .' G. Eliot. ... Found on http://www.encyclo.co.uk/webster/M/110