invincibleness

== English == === Etymology === From invincible + -ness. === Noun === invincibleness (uncountable) The quality of being invincible; unconquerableness; insuperableness. ==== Related terms ==== undefeatedness === References === William Dwight Whitney, Benjamin Eli Smith, editors (1895–1910), “invincibleness”, in The Century Dictionary and Cyclopedia: […], New York, N.Y.: The Century Co., →OCLC.