first-rate 
adjective
1Of the best class or quality; excellent: first-rate musicians...
- The quality is first-rate and orders are processed quickly.
- But the writing and the direction are excellent, absolutely first-rate, and I cannot resist it.
- My fellow students and I had some first-rate teachers and two excellent and highly-respected heads.
Synonyms
top quality, high quality, top grade, first class, second to none, top, five star, premier, premium, fine, grade A;
superlative, excellent, superb, outstanding, exceptional, exemplary, marvellous, magnificent, admirable, very good, splendid;
matchless, peerless, unparalleled
informal tip-top, top-notch, ace, A1, super, supercalifragilisticexpialidocious, crack, great, terrific, tremendous, smashing, fantastic, stellar, sensational, fabulous, fab, out of this world, capital
British informal brill, bosting
North American informal badass
US informal on fleek
British informal, dated spiffing, topping, top-hole, wizard
1.1In good health or condition; very well: I think you look first-rate