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If a word conforms to a special rule, I call it an Ordered Word™.

Use the examples below to find the rule.

$$ % set Title text. (spaces around the text ARE important; do not remove.) % increase Pad value only if your entries are longer than the title bar. % \def\Pad{\P{0.0}} \def\Title{\textbf{ Ordered }} % \def\S#1#2{\Space{#1}{20px}{#2px}}\def\P#1{\V{#1em}}\ \def\V#1{\S{#1}{9}} \def\T{\Title\textbf{Words }^™\Pad}\def\NT{\Pad\textbf{Not}\T\ }\displaystyle \smash{\lower{29px}\bbox[yellow]{\phantom{\rlap{rubio.2017.02.04}\S{6px}{0} \begin{array}{cc}\Pad\T&\NT\\\end{array}}}}\atop\def\V#1{\S{#1}{5}} \begin{array}{|c|c|}\hline\Pad\T&\NT\\\hline % \text{CAT} & \text{DOG}\\\hline \text{BACK} & \text{FRONT}\\\hline \text{NO} & \text{YES}\\\hline \text{BEST} & \text{WORST}\\\hline \text{DEMON} & \text{ANGEL}\\\hline \text{FELL} & \text{ROSE}\\\hline \text{TEA} & \text{COFFEE}\\\hline \text{ONE} & \text{TWO}\\\hline \text{WOOF} & \text{MEOW}\\\hline \text{LIE} & \text{TRUTH}\\\hline \end{array}$$

CSV Version:

Ordered Words™,Not Ordered Words™
CAT,DOG
BACK,FRONT
NO,YES
BEST,WORST
DEMON,ANGEL
FELL,ROSE
TEA,COFFEE
ONE,TWO
WOOF,MEOW
LIE,TRUTH

What is the rule?
There are many more Ordered Words™

Subtle Hint:

Those born in 90's are more likely to know this rule.

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  • 2
    $\begingroup$ Looks like someone used this puzzle as inspiration for a Programming Puzzles & Code Golf question. Nice! (FYI: The link to the question contains spoilers to this puzzle.) $\endgroup$ – Alpha Aug 1 '17 at 1:05
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I think an ordered word is one which

Is created by pressing buttons on a phone keypad, in order of number size, in one direction.

To type the not ordered words, you need to increase the number size and then decrease, or vice-versa. P.S. - I was born in the 60's

The relevant pattern is given by

2 → ABC
3 → DEF
4 → GHI
5 → JKL
6 → MNO
7 → PQRS
8 → TUV
9 → WXYZ

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  • $\begingroup$ For best or tea you couldn't do this on keypad in one direction but would work if you just had 2-9 in one line $\endgroup$ – BMS21 Jul 31 '17 at 10:34
  • $\begingroup$ Thanks @BMS21 - I updated answer to clarify the order is in terms of number size. $\endgroup$ – Tom Jul 31 '17 at 10:43
  • 3
    $\begingroup$ @BMS21 unless you had a Nokia 3650 :) $\endgroup$ – Novarg Jul 31 '17 at 11:54
  • $\begingroup$ You forgot to say that the direction changes for each word in this model. I.e. a word can be mapped on either increasing or decreasing ordinal value, but always consistently one of those. $\endgroup$ – can-ned_food Aug 1 '17 at 7:35

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