unmistakeable

Adjective

unmistakable (comparative more unmistakable, superlative most unmistakable)

1. Unique, such that it cannot be mistaken for something else.
   • Now, I still think that for this box of matches to have escaped the wear of time for immemorial years was a strange, and for me, a most fortunate thing. Yet oddly enough I found here a far more unlikely substance, and that was camphor. I found it in a sealed jar, that, by chance, I supposed had...1895 May 29, H[erbert] G[eorge] Wells, chapter X, in The Time Machine: An Invention, London: William Heinemann, →OCLC

   Antonyms:

   mistakable