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You should probably read the article if you want to know the answer. It's in the section called "elicitation".

This appears to be an euphemism for "prompting".

Also, that section is vague and doesn't explain the actual methodology.

Synonym is the word you’re after.

I'm looking for the word you use when you've replaced an embarrassing word with a less embarrassing one.

"euphemism". Like passing gas vs farted.