What is thiers?

In English, “thiers” is a misspelling of the possessive pronoun “theirs” (e.g., “Is this car theirs?”).

This is a common mistake, just like when people mix up thier and their. In both of these words, the “e” comes before “i,” just like in the alphabet.

In French, Thiers is a place and a surname.

QuillBot’s Grammar Checker extension can keep your writing free of spelling and grammar mistakes in both English and French.