1. Including much
   "the pianist's wide-ranging repertoire" 
2. Widely different
   - varied

See also: big, diversified, large

• unmerchantable
• unmerciful
• unmercifully
• unmercifulness
• unmerited
• unmeritorious
• unmet
• unmethodical
• unmilitary
• unmindful
• unmindfully
• unmindfulness
• unmined
• unmingled
• unmissable
• unmistakable
• unmistakably
• unmistakeable
• unmitigable
• unmitigated
• unmixable
• unmixed
• unmoderated
• unmodernised
• unmodernized