Soon; shortly; an adverb indicating that something will happen in the near future or is nearly the case.
もうじき電車が参りますので、お手すりにつかまってください。
The train will arrive shortly, so please hold onto the handrail.
もうじき春が来るから、花見の計画を立てよう。
Spring will be here soon, so let's make plans for cherry-blossom viewing.
彼はもうじき到着するはずだと連絡があった。
I was told he should be arriving shortly.