…or a lingua Franca.

Also COSTLIER and CREOLIST. Linguistics has its specialists, and a creole is different from a pidgin or a dialect.

Pair. I keep missing out letters on this annoying on-screen keyboard.

Official answer: ELICITORS. Eight-letter approximations: CLOISTER and CLITORIS -an interesting pai.

BRIGNONUS? anagram of SUBORNING.

Really messed that one up. Should be “salt-tolerant“, “glassmaking“ and “ashes are” (missed space).
I hate on-screen keyboards.

“How” prompts for “do”, “to” or ”many”. But”what” prompts for “is”, “are” or an emoji that looks lIke a grumpy cat's face. #whatisthat?

Answer: ”who“ prompts for “is”, “are” or “wants“; “when” for “you”, “I” or “are”; ”where” for “is”, “are” or “do” (in that order of preference) “why” prompts for “is”, “do” or “are” (different order)…

Having studied Latin (and being a #wordnerd), I can guess what that word means but I'd honestly never seen it before.