Exact(1)
Non-obviousness, or the requirement of an "inventive step", imposes a threshold of ingenuity to the scientific finding.
Similar(7)
To say nothing of ingenuity.
So a bit of ingenuity was needed.
It wasn't for want of ingenuity.
"A lot of ingenuity went into this.
"It was a sublime piece of ingenuity".
Four Types of Ingenuity: What kind of philosopher are you?
The result is a remarkable feat of ingenuity.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com