# What word could be used for a thing that holds a measure that lies between true and false?

In fuzzy logic a value can be partially true so I could present it as a degree of truth.

However, I'm looking for a word for this thing that contains a measure that lies between true and false.

The quality of the measure might be called fuzziness or it might be called a fuzzy value.

However, in conventional logic there's a boolean that can be either true or false.

So is there a word for the fuzzy equivalent? Or can you think of way of expressing this otherwise?

• In your second sentence, you ask for something with false-trueness but in your question you ask for things lying in between truth and fallacy. They're different : Something appearing to be true and something that can be both a truth or fallacy. – vickyace Jun 7 '16 at 1:09
• schrodinger's cat, or a tossed coin (that can take two values) – vickyace Jun 7 '16 at 1:17
• But this is only because you are waiting or wanting a certain value. Suppose you want the head of a coin it. You toss it in the air. it can take any value as long as it is in the air. – vickyace Jun 7 '16 at 1:20
• verisimilitude. – Dan Bron Jun 7 '16 at 1:47
• Truthiness? – Max Williams Jun 7 '16 at 7:46

I had a search around and it looks like the equivalent of a boolean variable is a fuzzy variable.

As boolean got its name from George Boole and the term fuzzy logic was introduced by a certain Lotfi Zadeh perhaps the neologism zadehean could be added.

Edit: Two examples of existing usage have been found.

You'll love the new term for fuzzy logic that is starting to appear: "Zadehean logic", after Lofti Zadeh, one of the original fuzzy theorists.

Source

For example DNF and CNF expressions for [...] are stated as below for Zadehean and Boolean set theories

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