leading-edge (noun) leading edge: forward edge
Sinonime: best,
champion, choice,
crack,
dandy,
delightful,
deluxe, excellent,
famous, fine,
first, first-class*, first-rate, five-star,
fly,
great, prime,
splendid,
superb,
top,
top-notch*, world-class
Antonime: inferior, low-class,
minor,
poor,
unimportant