The spelling of "more unfantastic" can be a bit tricky, as it may be written as "more un" + "fantastic" or "mor" + "eunfantastic." Using IPA phonetic transcription, we can see that the first option would be pronounced as /mɔːr ʌnˈfæntæstɪk/, while the second option would be pronounced as /mɔːr ˌjuːnˈfæntæstɪk/. Whichever way it's spelled, the word means even less fantastic than before, indicating a further decrease in quality or desirability.
The word "more unfantastic" does not have a specific etymology as it appears to be a combination of two words "more" and "unfantastic".
"More" is a comparative form of the adjective "much", derived from the Old English word "māra". It indicates a greater degree or quantity.
"Unfantastic" itself is a compound word formed by adding the prefix "un-" to the adjective "fantastic". "Fantastic" comes from the Late Latin word "fantasticus", which means "imaginary" or "imagined". It later evolved from the Latin word "phantasticus" and the Greek word "phantastikos", both of which have a similar meaning.
Combining "un-" with "fantastic" creates the opposite meaning, resulting in "unfantastic", which indicates something that is not fantastic or lacks the qualities associated with fantasy or imagination.