Meaning of ひょっとして in Japanese

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Definition of ひょっとして

ひょっとして(hyottoshite)

「ひょっとして、今までいままで気づいてなかったのですか」「いやいいえ、まぁ・・・。想像そうぞうの埒外らちがいだったもんもので・・・」

"Did you possibly not notice until just now?" "Er, well ... it was just so beyond my imagination that ..."

Do you have an extra English dictionary by any chance?

ひょっとして彼女かのじょと会ったの？

Do you mean you met her!?

She might know the answer.

Did you happen to see her yesterday?

Do you, by any chance, think you will succeed?

Did you happen to see her yesterday?

ひょっとしてブラウンという名前なまえの男性だんせいをご存じごぞんじありませんか。

Do you happen to know a man by the name of Brown?

Do you happen to know of a cheap hotel near here?

ひょっとして、あなたはブラウン教授きょうじゅをご存知ですか。

Do you know Professor Brown by any chance?