My husband, who is a fairly fluent French speaker, says that naitre (to be born) is the odd one, because it has to be used together with an appropriate form of etre (and the same thing happens in English). E.g. "I can", "I say", "I become", etc., but "I _am_ born".
From the Spanish list, just looking at the dictionary, clave (code/password/key/clef) is the only one that can be a noun and an adjective, the rest are all nouns.
Let me know how that puzzle is going. Last Minute Aaron D. Fuegi wrote:
Sofiya, Can you look at the puzzle "Lost in Translation" in the Yukon area. There are 6 words each in 5 languages. Apparently, each set of words is an Odd Man Out which the answer is grammar based and only clear to a fluent speaker. Can you look at the Russian set and see if anything leaps out at you? If it does, send to the whole list so someone will quickly see it. Thanks, Aaronaarondf bu edu http://www.lasthomelyhouse.com/ (the Last Homely House)