Sending question: Why english?

[Flickerdart]

Latin would probably be the most synthetic language that is widely known in the West.

"Valesne?" "Valeo".
"Are you all right?" "I'm fine."

"Morituri sumusne?" "Sumus."
"Are we going to die?" "Yes, we are."

"Quot verba sunt tibi?" "XXIV".
"How many words do you have?" "24".

"The horse will be stolen." "Equus rapietur."

"Once you will have stolen the horse, we will escape". "*** equum raperis, fugiamus."

Casting a wider net, you can do exactly the same thing with Russian. Hell, in some cases it even works better - your "Are we going to die?" "Yes, we are." becomes the incredibly compact "умрем?" "да" thanks to the student-maddening feature of declension. Similarly, the horse plan would be "как сопрешь лошадь, бежим" which also has fewer syllables than the Latin.