This is the 11th most frequent Czech word.
tak
The Czech word "tak" translates to "so," "thus," "then," or "like this/that" in English, depending on the context.
Here, 'tak' introduces the way or method of doing something, which is later specified.
Uděláme to tak, jak jsme to plánovali.
We will do it the way we planned.
In this sentence, 'tak' serves as an adverb, intensifying the adjective 'tired' ('unavený').
Byl tak unavený, že usnul okamžitě.
He was so tired that he fell asleep immediately.
In this sentence, 'tak' is used as a connective or introductory word meaning 'so' to express a conclusion or decision.