1. Not imagined even in a dream
   - undreamed, undreamed of, undreamt, undreamt of

See also: incredible, unbelievable

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