This is my first try at a puzzle, so hopefully it at least lasts a few hours before someone figures it out :)
This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.
If a word conforms to a special rule, I call it a Spaced Out Word™.
Use the following examples below to find the rule.
And, if you want to analyze, here is a CSV version:
Spaced Out Words™,Not Spaced Out Words™ HUMILIATE,DEGRADE HEXAGONALLY,OCTAGONALLY DUNGEON,CATACOMB NEFARIOUSLY,HEINOUSLY NONSPHERICAL,NONCUBIC WOOZINESS,DIZZINESS PRECOGNITION,CLAIRVOYANCE EXTENSION,ANNEX
UPDATE:
It occurred to me that, even if a puzzler were to reverse-engineer my criteria from the words above, they may not be able to fully determine the rules. To help, here are some additional words that are Not Spaced Out Words™ to narrow down the criteria:
CELEBRATION WEATHERMEN MANIPULATING ADORINGLY
It's less of a hint and more of a clarification, but I put them in spoiler text for those who may want to solve the puzzle as it was originally written (and maybe refer back to these after, for verification).
ADDITIONAL WORDS
Below are a few more Spaced Out Words™ and Not Spaced Out Words™:
Spaced Out Words™,Not Spaced Out Words™ AROUSING,EXCITING ADJOURN,RECESS
And a few more if you need more. I think this just about exhausts the list...
Spaced Out Words™,Not Spaced Out Words™ POVERTYSTRICKEN,IMPOVERISHED UNCOPYRIGHTED,PUBLICDOMAIN(yes, that last Not Spaced Out Word™ is technically two words)
just about exhausts the list
is what triggered my answer. The idea that there could only be so many examples was not something that I had considered. $\endgroup$