This is the 1127th most frequent German word.
womöglich
Possibly; perhaps; if possible.
Here, 'womöglich' expresses a possibility or assumption without certainty.
Womöglich hat er den Bus verpasst.
Possibly, he missed the bus.
In this sentence, 'womöglich' conveys a speculative or presumptive statement about a situation.
Womöglich ist das Konzert schon ausverkauft.
Perhaps the concert is already sold out.
The word 'womöglich' here introduces a conjectural suggestion about the utility of the book.