wondrous

adjective
1

Wonderful; amazing, inspiring awe; marvelous.

"We all stared open-mouthed at the wondrous sight."

adverb
1

In a wonderful degree; remarkably; wondrously.

Source: https://en.wiktionary.org/wiki/wondrous

Definitions come from the Free Dictionary API (dictionaryapi.dev), with Wiktionary as a fallback when it is slow, and are cached for up to 24 hours.