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.

$$\begin{array}{|c|c|}\hline \bbox[yellow]{\textbf{CPO Words }^™}& \bbox[yellow]{\textbf{Not CPO Words }^™}\\ \hline \text{ ANIMAL }&\text{ BEAST }\\ \hline \text{ BULKY }&\text{ HUGE }\\ \hline \text{ DEGRADE }&\text{ DEMEAN }\\ \hline \text{ FEATHER }&\text{ POULTRY }\\ \hline \text{ IGNITE }&\text{ BLAZE }\\ \hline \text{ JEANS }&\text{ SLACKS }\\ \hline \text{ MAY }&\text{ JUNE }\\ \hline \text{ NERVOUS }&\text{ ANXIOUS }\\ \hline \text{ PUBLIC }&\text{ DISCRETE }\\ \hline \text{ REPLACE }&\text{ DISPLACE }\\ \hline \text{ SPELUNKING }&\text{ EXPLORING }\\ \hline \text{ UNSTABLE }&\text{ TEETERING }\\ \hline \text{ VOICE }&\text{ CRY }\\ \hline \end{array}$$

In case you want it in CSV:

CPO Words™,Not CPO Words™  

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.

  • $\begingroup$ OP, any hints?? $\endgroup$ – CodeNewbie Nov 28 '16 at 5:55
  • 1
    $\begingroup$ I added a hint. $\endgroup$ – Matt Nov 28 '16 at 15:25
  • $\begingroup$ The hint makes me think of SEO, but I am unable to sort the words based on that criteria. $\endgroup$ – CodeNewbie Nov 30 '16 at 4:57
  • $\begingroup$ Is the acronym (CPO) helpful in solving this puzzle? Or will we only see what it meant afterwards? The hint is not really helping me either so far... $\endgroup$ – Levieux Dec 5 '16 at 10:59
  • $\begingroup$ I'd say so. It's a common use of the acronym, at least in the USA $\endgroup$ – Matt Dec 5 '16 at 11:48

I think a CPO Word™ is one which has been

used before in the What is a Word™/Phrase™ series either as a positive or negative example.

Examples are -

ANIMAL : What is an Anagrammable Word™?
BULKY : What is an Odious Word™?
DEGRADE : What is a Spaced Out Word™?
FEATHER : What is a Perfect Word™?
IGNITE : What is a Tellygraph Word™?
JEANS : What is a Veteran Word™?
MAY : What is an Inflated Word™?
NERVOUS : What is an Uptight™ Word?
PUBLIC : What is an Explosive Word™?
REPLACE : What is a Conflicted Word™?
SPELUNKING : What is an Energetic Transmitter Word™?
UNSTABLE : What is a Rotary Club Word™?
VOICE : What is a Chaotic Word™?

They are called CPO words as this is an abbreviation for

Cerified Pre-owned - credit for this is due to Levieux - who let someone else do the searching.

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