"Hur Kus" is a Swedish word that translates to "how silly" or "how foolish" in English. When looking for synonyms for this phrase, one can consider alternatives like "how ridiculous", "how ludicrous" or "how absurd". These expressions convey a similar meaning of disbelief or incredulity towards someone's actions or statements. Other possible synonyms include "how senseless", "how nonsensical" or "how nonsensible". All of these phrases capture the essence of expressing surprise or contempt at something deemed foolish or lacking rationality. It is crucial to choose the appropriate synonym, considering the tone and context in which it will be used to accurately convey the intended meaning.