fantastically

In a fantastic manner.

He painted fantastically with everything as if in a dream.

"The Chengtu revolutionaries were fantastically colourful in the Szechwanese manner—they costumed themselves as heroes of the stage and their energies were chiefly occupied in tying ropes across the main streets so that when Imperial officials rode by in their litters they would have to get down and crawl under, losing face.

To an extent only in fantasy; outrageously; ridiculously.

He was fantastically wealthy.

The provinces of Liaoning, Heilongjiang and Jilin are fantastically cold in winter, indeed one of the major tourist attractions for the hardy is the display of ice-carved figures in public parks (especially in Haerbin, Heilongjiang province). The long winters have average temperatures between — 20°C and — 27°C, although the short summers are hot.