This is the 14588th most frequent Russian word.
первоначальный
Original; initial.
In this sentence, "первоначальный" is used to denote the first or initial plan made in a sequence or set of options, emphasizing its predecessor status to any alterations.
Первоначальный план не удалось осуществить.
The original plan could not be implemented.
Here, "первоначальное" describes the impression formed at the very beginning before any further experience or information was gained.
Первоначальное впечатление оказалось обманчивым.
The initial impression turned out to be deceptive.
In this sentence, "первоначальную" refers to the original, unmodified version of a document, prior to changes or edits.