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Inconsistent

From Boercade

inconsistent = in + con + sist + ent

in-: not

con-: together, with

sist: derived from Latin "sistere", meaning "stand"

-ent: of doing something

So inconsistent means: 

Of not standing together.

If someone's statement/behaviour does not stand together with before, this means "its statement/behaviour changes so that other people become confused".

Evolution of usage

The statement of not standing together will make people confused.

=>

The statement of not consistent will make people confused.

=>

The inconsistent statement will make people confused.

Inconsistency.jpg

Related vocabulary

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consistence
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