Adverb
unbeatably (comparative more unbeatably, superlative most unbeatably)
In an unbeatable manner.
These popular sheets are made from 100% cotton, and the lightweight fabric is unbeatably soft, stretchy and welcoming. Source: Internet
The prices aren’t the cheapest at Apple but you’re ensured of an unbeatably good experience, especially inshore which includes phone set-up. Source: Internet
The tablet is unbeatably portable – thin, lightweight and not much bigger than the size of the display. Source: Internet