This is the 359th most frequent Estonian word.
pikalt
"Long" or "for a long time."
Here, 'pikalt' is used to indicate the duration of the action, specifically 'for a long time'.
Ma ootasin teda pikalt.
I waited for him for a long time.
In this sentence, 'pikalt' describes the manner of speaking, meaning 'in an extensive manner'.
Ta rääkis meile pikalt oma reisist.
He told us extensively about his trip.
Here, 'pikalt' reflects the span of the action 'turned back,' implying 'for a certain period of time.'