An illiterate person who does not know the letters of the alphabet(noun)
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Use "analphabet" in a sentence
"On my frequent travels to Cuba, I have never met an analphabet."
"Some issues seem ridicuolous to me, I do not know if they can realise that in many cases they write much to explain nothing, or that they use uncertain data given as pure truth, and that they seem to consider any skeptical just a child and a scientifical analphabet."
"As a complete dendro analphabet – I made a bit of search about dendrology done in my country and a dendrologist and a climatologist Rudolf Brazdil commented in one of his Czech papers:"