How can I transfer my additions to the standard dictionary from one computer to another?

[histoguy]

I don’t know what file my additions are in.

[charlie.it]

You can try to copy the “user” folder of the user profile from one computer to another.

[Tutorial] User profile

Where are the user profile locations?

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[oweng]

Also refer this answer i.e., it is better to copy only the dictionary files.