This is the 718th most frequent Lithuanian word.
neva
"Neva" means "supposedly" or "allegedly" in English.
Here, "neva" is used to indicate an unverified or questionable statement told by Jonas.
Jonas sakė, neva jis buvo vakar mieste.
Jonas said that allegedly he was in the city yesterday.
"Neva" in this case implies doubt or irony regarding his excuse.
Neva jis pamiršo savo pažadą.
Supposedly, he forgot his promise.
In this sentence, "neva" expresses an assumption or pretense about the student's comprehension.