To fix the KeyError you can do the following thing:
variable = {}
for word in wordlist:
    variable[word] = []
    for boolean in booleanlist:
        variable[word].append(True)
Note that in this code snippet every keyword has the same list of Booleans, but that’s what you have given to us.
edit: removed the global declaration, it was there only because the OP had it.
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solved Python: Save keywords in a list and add another list to the single words in it [closed]