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 CPO Word™.
Use the examples below to find the rule.
|CPO Words™||Not CPO Words™|
In case you want it in CSV:
CPO Words™,Not CPO Words™ ANIMAL,BEAST BULKY,HUGE DEGRADE,DEMEAN FEATHER,POULTRY IGNITE,BLAZE JEANS,SLACKS MAY,JUNE NERVOUS,ANXIOUS PUBLIC,DISCRETE REPLACE,DISPLACE SPELUNKING,EXPLORING UNSTABLE,TEETERING VOICE,CRY
The puzzle relies on the series' inbuilt assumption, that each word can be tested for whether it is a CPO Word™ without relying on the other words.
These are not the only examples of CPO Words™, many more exist and can be found.
Let someone else do the searching.