i, x are letters that make 'xix'
IX, XI, ix, xi are words within 'xix'
xxi is an anagram of 'xix'
XXIX, xxix are words created by adding a letter to 'xix'
1 possible definitions for 'xix'
Under this definition, xix is an adjective and has the following properties:
nineteen, 19 have the same meaning as 'xix'
nineteen, 19, XIX are derivatives of 'xix'.
cardinal is similar to xix.