Interestingly a couple of languages I know depict time in distance as well as sizes depending on the context.
I don't have to work to "translate" between these innate collections of ideas to spoken language, it happens automatically.
Some people tell me their inner thoughts are in a certain language, but that's not the case for me.
So I would like a clarification. Do you "think in a language"?
Except when they say (yuck!!) "monolingual" -- a horrible neologism that of course isn't.
Furthermore, the distinction in linguistics between "-glot" and "-lingual" is that "-lingual" is used in reference to native language(s) whereas "-glot" is used about the languages a person is able to speak at a given level without them necessarily being native languages.
So — to a linguist at least — you can be a monolingual polyglot if you have one native language but e.g. conversational knowledge of 4 other languages.