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Particularly: abbr., 5 letters
I love you is Mi amas vin in it, 9 letters
Saluton! Kiel vi fartas?, e.g., 9 letters
Artificial international language, 9 letters
Artificial language, 9 letters
It has just 16 rules of grammar, 9 letters
It means one who hopes, 9 letters
Language in which plurals are formed by adding -oj, 9 letters
Language spanning empires, per Antony (9), 9 letters
Lingua franca, for some, 9 letters
One prates oddly in a language few can understand (9), 9 letters
Person ate boiled tongue (9), 9 letters
Person ate reconstituted tongue (9), 9 letters
Professor Zamenhof's invention, 9 letters
Scattered notepapers missing page displaying unnatural language (9), 9 letters
Stalin called it the language of spies, 9 letters
Stalin's language of spies, 9 letters
Ten operas broadcast in a universal tongue, 9 letters
The 1965 William Shatner film Incubus is in it, 9 letters
Zamenhof's creation, 9 letters
An artificial language based on Esperanto and Ido, 11 letters