1. The ordinal number of five hundred in counting order
   - five-hundredth

See also: ordinal

• undedicated
• undefeated
• undefendable
• undefended
• undeferential
• undefiled
• undefinable
• undefined
• undelete
• undelineated
• undemanding
• undemocratic
• undemocratically
• undemonstrative
• undeniable
• undeniably
• undenominational
• undependability
• undependable
• undependableness
• undependably
• undepicted
• under
• under a cloud
• under arms