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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 Stable Word™.

Use the following examples below to find the rule.

$$\begin{array}{|c|c|}\hline \bbox[yellow]{\textbf{Stable Words }^™}& \bbox[yellow]{\textbf{Non-Stable Words }^™}\\ \hline \text{ even }&\text{ odd }\\ \hline \text{ acidic }&\text{ alkaline }\\ \hline \text{ transparent }&\text{ opaque }\\ \hline \text{ uniqueness }&\text{ repetition }\\ \hline \text{ movableness }&\text{ mobility }\\ \hline \text{ concoction }&\text{ mixture }\\ \hline \text{ explode }&\text{ implode }\\ \hline \text{ trademark }&\text{ protected }\\ \hline \text{ Chinese }&\text{ Japanese }\\ \hline \text{ rare }&\text{ common }\\ \hline \text{ cyclic }&\text{ acyclic }\\ \hline \text{ dared }&\text{ Scandinavianism }\\ \hline \text{ Aaronsburg }&\text{ Canada }\\ \hline \text{ alternate }&\text{ algorithm }\\ \hline \end{array}$$

And, if you want to analyze, here is a CSV version:

Stable words™,Non-Stable words™
even,odd
acidic,alkaline
transparent,opaque
uniqueness,repetition
movableness,mobility
concoction,mixture
explode,implode
trademark,protected
Chinese,Japanese
rare,common
cyclic,acyclic
dared,Scandinavianism
Aaronsburg,Canada
alternate,algorithm

The puzzle relies on the series' inbuilt assumption, that each word can be tested for whether it is a Stable Word™ without relying on the other words.

These are not the only examples of Stable Words™, many more exist and can be found.


Hint #1

Words that have a certain simple property are automatically disqualified from being Stable Words™. There are four such words on the provided list of Non-Stable Words™, and here are three more:
imply, provide, adjust

Hint #2

Don't tackle the whole word at once, rather look at it a few letters at a time.

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  • 11
    $\begingroup$ "dared" and "Scandinavianism" is an ... interesting pairing. $\endgroup$ – Rand al'Thor Nov 27 '16 at 23:47
  • 3
    $\begingroup$ @Techidiot Yes, it is. You can also test them for being Stable Words™, as the goal of this puzzle is not figuring out what an Absolute Word™ is. $\endgroup$ – Borka223 Nov 29 '16 at 20:03
  • 1
    $\begingroup$ Does font matter? If so, are you sure it works both for the MathJax as well as the monospaced code table? $\endgroup$ – user14478 Dec 3 '16 at 19:09
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    $\begingroup$ @Borka223- Can you please explain why those words are called "stable words" ? $\endgroup$ – Techidiot Dec 5 '16 at 9:09
  • 1
    $\begingroup$ What does this property have to do with "stability"? $\endgroup$ – Deusovi Dec 5 '16 at 19:09
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My thoughts about this:

A Stable Word™ is a word which, when split into groups of two letters, contains at least two groups that start with the same letter, while at the same time it contains no groups that are identical.

Examples of this:
even -> EV-EN
acidic -> AC-ID-IC
transparent -> TR-AN-SP-AR-EN-T
uniqueness -> UN-IQ-UE-NE-SS
movableness -> MO-VA-BL-EN-ES-S
concoction -> CO-NC-OC-TI-ON
explode -> EX-PL-OD-E
trademark -> TR-AD-EM-AR-K
Chinese -> CH-IN-ES-E
rare -> RA-RE
cyclic -> CY-CL-IC
dared -> DA-RE-D
Aaronsburg -> AA-RO-NS-BU-RG
alternate -> AL-TE-RN-AT-E

Some of the Not-Stable Words contain groups with the same starting letters, but in all of these cases those groups are completely identical:
repetition -> RE-PE-TI-TI-ON
Scandinavianism -> SC-AN-DI-NA-VI-AN-IS-M

Lots of the other Not-Stable words contain repeating letters, but none of them have letter groups with the same starting letter, i.e. none of them have repeating letters in odd-numbered positions:
odd -> OD-D
alkaline -> AL-KA-LI-NE
mobility -> MO-BI-LI-TY
protected -> PR-OT-EC-TE-D
Japanese -> JA-PA-NE-SE
common -> CO-MM-ON
acyclic -> AC-YC-LI-C
Canada -> CA-NA-DA

All the other Not-Stable words, as the words imply, provide and adjust, contain no repeating letters at all.

Not sure yet why this property makes these words stable/not-stable...

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  • 1
    $\begingroup$ What about CYCLIC vs ACYCLIC? I've been racking my brains trying to find the answer there. $\endgroup$ – Karan Atree Dec 5 '16 at 3:46
  • $\begingroup$ Same here. This puzzle has been making me unstable for days. :) $\endgroup$ – Rubio Dec 5 '16 at 6:13
  • $\begingroup$ ACYCLIC doesn't conform to the rule, while CYCLIC does. I'll clarify this a bit in a minute.. $\endgroup$ – Levieux Dec 5 '16 at 6:53

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