a.
1.
Worthy of imitation, fit for a pattern.
2.
Pattern-like, closely adherent to the pattern, faithful, close, exact, assiduous, scrupulous, punctual, punctilious, rigid, rigorous.
3.
Remarkably good, excellent, highly virtuous, correct, estimable, worthy, deserving of approval.
4.
Monitory, warning, admonitory, condign.