What part of speech is the word thus?

Answer 1

"Thus" is an adverb.

"First she shimmied and then she moved thus."

Here "thus" is an adverb modifying the verb "moved."

"Thus spoke Zarathustra!"

Here "thus" is an adverb modifying the verb "spoke."

There are many adverbs that can be used as conjunctions and "thus" is one of them. These can be called conjunctive adverbs.

"I never mentioned the killer was right handed, thus the only way Catherton could have known that was if he were the killer!"

Here "thus" is a conjunctive adverb modifying the verb "was" (which is the main verb of the entire phrase following "thus").

A common misusage of "thus" makes it look like a demonstrative pronoun:

"First she shimmied and then she moved as thus."

Here, it is used as the object of the adverbial phrase, "as thus." But because "thus" is already an adverb by itself, this is redundant and poor grammar. "Like thus" is another form of this common misusage.

Answer 2

yes

Answer 3

conjunction