Adverb
Verb (する)
Usually written in kana
1. for a moment; for a minute
彼はしばらく考えてから答えた。He thought for a moment before answering.
Adverb
Usually written in kana
2. for a while; for some time
二人はそれからしばらく何も話さない。The two of them did not speak for a while after that.
3. for the time being; for now
いや、しばらくはここでゆっくり過ごすよ。No, I'll take it easy here for the time being.
Interjection
Usually written in kana
4. it's been a long time; long time no see
しばらくですね、お元気でしたか?It's been a while. How have you been?