This is the 116th most frequent Greek word.
χθες
"Χθες" means "yesterday" in English.
In this sentence, 'χθες' is used as an adverb of time to indicate that the action took place the day before today.
Χθες πήγαμε στον κινηματογράφο.
Yesterday we went to the cinema.
Here, 'χθες' again functions as an adverb of time, highlighting the day when the mentioned events occurred.
Συζητήσαμε για τα γεγονότα που συνέβησαν χθες.
We discussed the events that occurred yesterday.
In this example, the word 'χθες' is adapted into its genitive form 'χθεσινής' to act as an adjective describing the noun 'μέρας' (day).