prodigious

Short definition from Wiktionary

Adjective

1. 1
   Extraordinarily amazing.
2. 2
   Extraordinarily amazing: In a positive sense: marvellous, wonderful; (specifically) extremely talented, especially at a young age.
3. 3
   Extraordinarily amazing: In a negative sense: appalling, horrifying, shocking; (specifically, archaic) abnormal, freakish, monstrous, unnatural.
4. 4
   Very big in extent, quantity, or size; abundant; intense; colossal, huge.
5. 5
   Having the nature of an omen or portent; ominous, portentous.

Adverb

1. 1
   Synonym of prodigiously (“in a prodigious manner”).