Russian: сногшибательный (snogšibatel’nyj) = ‘stunning’, ‘fantastic’

literally:
с (s) = ‘from’ +
ног (nog) = ‘feet’ +
шиба-ть (šiba-t’) = ‘to shake’
-тель (-tel’) agentive suffix +
-н- (-n-) adjectival suffix +
-ый (-yj) = adjectival ending

= i.e. “good enough to knock you off your feet”

Thanks for that nice word, Mike.

There is a similar word in German, although it doesn’t sound as fun: umwerfend.

The verb umwerfen means ‘to knock over’, based on the verb werfen ‘to throw. Umwerfend is the present participial form that can be used as an adjective (like English ‘-ing’) or as an adverb (like English ‘-ingly’). For instance, eine umwerfende Schönheit is something like ‘a stunning beauty’ or ‘a knock-dead beauty’.