When to Use Shibaraku?

Here “shibaraku” is used in front a polite form (“omachi”) of the verb “matsu” (まつ・待つ) which means “to wait”. I'll give another example where “shibaraku” is used to express a somewhat undefined range of time. I waited for a while but he/she didn't come.

How do you use Shibaraku in a sentence?

わたしはしばらくひまです。 watashi wa shibaraku hima desu. I have free time for a while.

What is Shibaraku desu?

SHIBARAKU and HISASHIBURI both mean "Long time no see." They are both considered informal. SHIBARAKU DESU and HISASHIBURI DESU are more polite. The expression you know, OHISASHIBURI (=polite prefix is added to the word) is, in my opinion, a little more polite than SHIBARAKU DESU/HISASHIBURI DESU.