Is there a world that indicates the "zero-th" value in the series single, double, triple, ... ?
This came up in a humorous discussion of a double entendre. An interlocutor was accused of making a double entendre, to which they countered it was a "zeroth entendre", because there was no double-meaning, nor any straight forward ribald meaning (single entendre); therefore it was a _________ entendre, meaning that no improper interpretation could be made of the utterance.
I thought about "null", but I wonder if there is an official word in the series. Or, at least a word that fits the pattern better.
Edit Since a couple of comments have noted that a 0th entendre would technically have no meaning, please allow me to describe the context.
First, keep in mind that a double entendre is almost exclusively used to describe a situation where a phrase has a sexual innuendo meaning, despite the literal meaning of the phrase. In fact, it's probably a mischaracterization to describe a phrase with two possible meanings, neither of which are sexual, as a double entendre, according to common understanding. (I would be interested to see any references to the phrase double entendre used in a situation where neither meaning has sexual innuendo.)
The situation in which this question developed was one where it would be inappropriate to make any sexual remarks. Speaker A made a comment that, with some imagination, could be said to be a double entendre, by a stretch. Speaker B humorously noted this, and Speaker A quickly denied any sexual implications. Extending the joke, Speaker B then asked if it was a single entendre, meaning a straight-forward sexual comment, which would have been highly inappropriate in the situation, and perhaps indicate some negative consequences for Speaker A (please remember, the comment was only a double entendre by the longest stretch). Speaker A, wanting to end the conversation, stated emphatically that it was a 0th entendre, meaning that no sexual meaning whatever could be construed from the phrase.
As a humorous, playful use of language, entendre in this sense means "sexual meaning". "Zero-th entendre" would be "no sexual meanings whatsoever".