unmistakable

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
   • Whenever the locomotive was working hard there was unmistakable evidence of its higher power than its predecessors in the brilliant and explosive arcing between conductor shoes and the third rail; this was particularly vivid in Quarry Tunnel in the down direction, where the display equalled...1959 March, “The 2,500 h.p. electric locomotives for the Kent Coast electrification”, in Trains Illustrated, page 125

   Antonyms:

   mistakable