This is the 571st most frequent Bulgarian word.
казаха
"Казаха" means "they said" in English.
Here, "казаха" is used in a negative construction with "не," describing that the action of telling did not happen.
Не ми казаха причината за закъснението.
They did not tell me the reason for the delay.
Here, "казаха" is the past tense, third person plural of "казвам" (to say), meaning "they said." The pronoun "ми" indicates the indirect object ("to me").
Казаха ми добри новини.
They told me good news.
In this sentence, "казаха" introduces reported speech ("they said"), showing a completed action of saying that is followed by a subordinate clause.