daroo / deshoo だろう・でしょう
="Probably" Indicates conjecture.
Examples:
山田さんの秘書は中国人でしょう。
Tanaka-san no hisho wa Chuugokujin deshoo.
Mr. Tanaka’s secretary is probably Chinese.
パリの物価は高いでしょう。
Pari no bukka wa takai deshoo.
Prices in Paris are probably high.
A社の社長は来年帰国するだろう。
A-sha no shachoo wa rainen kikoku suru daroo.
The president of company A will likely return to his native country next year.
ジョンさんはテニスが上手でしょう。
Jon-san wa tenisu ga joozu deshoo.
Jon-san is probably good at tennis.