Ostensibly is the adverb that belongs with ostensible. If something is ostensibly true, that is the story people tell, but you are being invited not to swallow it whole. “She was ostensibly working late” means that is what was said; the speaker thinks something else was going on. “The club is ostensibly open to everyone” means that is the official line; in real life it may not work that way.

Ostensibly Ostensiblyis the adverb that belongs with ostensible是ostensible的副詞形式。If something is ostensibly true如果某件事ostensibly是真的，that is the story people tell那是大家講出來的說法，but you are being invited not to swallow it whole但暗示你不要全盤照信。"She was ostensibly working late"「She was ostensibly working late」means that is what was said意思是這是對外說的說法；the speaker thinks something else was going on但說話的人認為其實另有隱情。"The club is ostensibly open to everyone"「The club is ostensibly open to everyone」means that is the official line意思是這是官方的說法；in real life it may not work that way實際上可能不是這樣。

The word does not mean “obviously” or “clearly” — though actually, learners often hear the os- and think it is a posh way to say “plainly”. It is closer to the opposite: so they say.

The word does not mean "obviously" or "clearly"這個字不是「obviously（明顯地）」或「clearly（清楚地）」的意思——though actually不過其實，learners often hear the os- and think it is a posh way to say "plainly".學習者常常聽到os-開頭就以為是「plainly（明白地）」比較高級的說法。It is closer to the opposite它其實比較接近相反的意思：so they say也就是「據說」。

Same formal tone as ostensible. You will hear it from news readers, teachers, and people telling a story with a raised eyebrow, not from small children.

Same formal tone as ostensible跟ostensible一樣是正式的語氣。You will hear it from news readers, teachers, and people telling a story with a raised eyebrow你會從新聞主播、老師，還有講故事時挑著眉毛的人口中聽到，not from small children不會從小小孩口中聽到。

The matching adverb for showing off is ostentatiously, not this word.

The matching adverb for showing off is ostentatiously對應「愛炫耀」的副詞是ostentatiously，not this word不是這個字。