This is the 7640th most frequent Japanese word.
動かさ
"動かさ" is the stem form of the verb "動かす," meaning "to move something" or "to cause something to move."
In this sentence, '動かさ' is part of '動かさなかった', indicating the act of moving or operating something (usually a machine or device), and the sentence expresses not taking this action.
彼はその機械を動かさなかった。
He didn't move the machine.
Here, '動かさ' is used in the form '動かさずに', showing the action of not moving something (the table in this case), and it denotes maintaining its position while performing another action.
彼女はテーブルを動かさずに掃除した。
She cleaned without moving the table.
In this example, '動かさ' is used as part of '動かさない', referring to not modifying or altering something (the plan), indicating a decision to keep it unchanged.