This is the 57th most frequent Persian word.
بوده
"بوده" in English means "has been" or "was."
In this sentence, "بوده" is used as the past participle of "being" to express the state of having been happy.
او همیشه خوشحال بوده است.
He/she has always been happy.
Here, "بوده" indicates a past state or profession.
کار او در گذشته معلمی بوده.
His/her work in the past has been teaching.
In this instance, "بوده" is used to describe a past challenging condition.