Use “thus” in a sentence to show the manner or way in which something is done. Use it to describe the extent or degree to which something has taken place. Use the word to show that one event is the result or consequence of a previous event.

When “thus” is used to mean “like this” or “in this way,” you do not use a comma. The only time you use a comma with “thus” is when it is used to replace the words “therefore,” “consequently,” or “as a result of.”

When “thus” is used to connect two independent clauses (complete sentences that could stand alone), you should use a comma before “thus.” Example 1: “He did not study for the exam, thus, he failed.” Example 2: “The company expanded too quickly, thus, it faced financial difficulties.”

“Thus” is an adverb that follows comma rules relating to its adverbial usage. You should place a comma before “thus” when it’s a conjunctive adverb (i.e. “he did this, thus won the game”). You should place a comma after “thus” when it’s an introductory adverb (i.e. “Thus, I was right”).