momentarily
adv. timeadv. for a very short time, or very soon. You use it when something happens quickly or will happen in just a second.
adv. for a brief period of time; alternatively, in a very short while. The latter sense is particularly common in North American English.
The power went out momentarily during the storm.
Please hold the line; the operator will be with you momentarily to assist with your request.
The speaker paused momentarily to gather his thoughts before addressing the most controversial aspect of the new policy proposal.
From momentary + -ly.
In British English, it primarily means 'for a short time'; in American English, it frequently means 'very soon'.
I will arrive for momentarily.I will arrive momentarily.Momentarily is an adverb and should not be preceded by a preposition like 'for' when indicating when something will happen.