Letters that make impugn
g, n, p, m, i, u are letters that make 'impugn'
umping is an anagram of 'impugn'
impugns is a word created by adding a letter to 'impugn'
1 possible definitions for 'impugn'
Under this definition, impugn is a verb and has the following properties:
'impugn' can be a type of challenge.