What is a Chaotic Word™?

Question

_{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.}

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

You can use the following examples below to find the rule:

CHAOTIC™	NON-CHAOTIC™
CLUE	HINT
THEN	NOW
MONKEY	CHIMP
BUG	ANT
SHOE	BOOT
WET	DRY
THIRTY	FORTY
ANTILOPES	AEGILOPS
SKILL	EFFORT
ZOMBIE	GHOST
VOICE	ACCENT
SURGERY	BIOPSY
COMPLETE	ALMOST
SUCCESS	ACCESS

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

CHAOTIC™, NON-CHAOTIC™
CLUE, HINT
THEN, NOW
MONKEY, CHIMP
BUG, ANT
SHOE, BOOT
WET, DRY
THIRTY, FORTY
ANTILOPES, AEGILOPS
SKILL, EFFORT
ZOMBIE, GHOST
VOICE, ACCENT
SURGERY, BIOPSY
COMPLETE, ALMOST
SUCCESS, ACCESS

Answer 1

A Non-Chaotic word is one in which

all the letters appear in alphabetical order.

and a Chaotic word

doesn't have the letters appear in order.

example:

Chaotic - Clue: E comes after U,

Non-Chaotic - Hint: All the letters are in alphabetical order