Similar word to firstclass:
10, A-1,ace,bad, beyond compare,boss,capital,champion,chief, choicest,cool, culminating,finest,first,first-class, first-rate,foremost, greatest,highest,incomparable,inimitable,leading, matchless,nonpareil, number 1,optimum, out-of-sight,outstanding,paramo
10, A-1,ace,bad, beyond compare,boss,capital,champion,chief, choicest,cool, culminating,finest,first,first-class, first-rate,foremost, greatest,highest,incomparable,inimitable,leading, matchless,nonpareil, number 1,optimum, out-of-sight,outstanding,paramo