This is the 919th most frequent Czech word.
chybět
"Chybět" means "to be missing" or "to lack."
Here, 'chybět' is used to express missing (emotionally lacking) someone or something, with the subject inverted with the experiencer in the dative case.
Chybí mi můj pes.
I miss my dog.
In this case, 'chybět' indicates that something is physically absent or unavailable from a location or item.
V této knize chybí poslední stránky.
The last pages are missing in this book.
Here, 'chybět' is used metaphorically to indicate the lack of a resource or opportunity, specifically time for an activity.