Upright, righteous, or lawful
Justis is a variant spelling of Justice, derived from the Latin 'iustitia'. It functions as both a virtue name and an occupational surname for a judge or officer of the law. While the 's' ending is less common than the 'ce' ending, it follows the phonetic spelling of the word's root.
American actor known for television roles
Australian professional heavyweight boxer
US births per 5-year period, 1990–present (SSA data).