Webster's Revised Unabridged Dictionary · 1913

Inimitable

Inimitable , adjective

[Latin inimitabilis: compare French inimitable. See In- not, and Imitable.]

Not capable of being imitated, copied, or counterfeited; beyond imitation; surpassingly excellent; matchless; unrivaled; exceptional; unique; as, an inimitable style; inimitable eloquence.
Inimitable force. — Dryden
Performing such inimitable feats. — Cowper