You searched for: “ad unguem
ad unguem
Perfectly.

Literally, "to a fingernail", this phrase is used to convey the thought of accomplishing something well or precisely.

In ancient times, a sculptor would test the smoothness of a finished surface by running a fingernail over it.

This entry is located in the following units: ad- (page 5) Latin Proverbs, Mottoes, Phrases, and Words: Group A (page 10) ungu- + (page 1)