превосходн|о - excellently
(как восклицание) splendid! ~ый excellent, fine, splendid, first-rate разг.
~ая погода splendid weather
~ая степень грам. superlative degree
Большой русско-английский словарь
ПРЕВОСХОДНО
нареч. capitally, first-class, first-rate, ideally, luxuriously, nobly, primely, tiptop, toppingly, sumptuously