invincibleness

== English == === Etymology === From invincible +‎ -ness. === Noun === invincibleness (uncountable) The quality of being invincible; unconquerableness; insuperableness. ==== Related terms ==== undefeatedness === References === William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “invincibleness”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.