Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
The term "Truth-Seeker," has its roots in Mahayana Buddhism, much like a number of other techniques in the series.
Source: https://gamerant.com/naruto-truth-seeking-balls-explained/