Surreptitiously is the adverb: it tells you HOW someone did something — secretly and quickly, hoping nobody would see. You slide it next to the verb: "He surreptitiously checked the time." "She glanced surreptitiously at the door." Because it describes an action, it is often used with verbs of looking and small movements — glance, check, slip, take, pass, remove.

Surreptitiously is the adverbsurreptitiously是副詞 it tells you HOW someone did something告訴你某人「怎麼」做了一件事 secretly and quickly, hoping nobody would see偷偷地、快速地，希望沒有人看到 You slide it next to the verb你把它放在動詞旁邊 "He surreptitiously checked the time." "She glanced surreptitiously at the door."像「He surreptitiously checked the time.（他偷偷看了一下時間。）」「She glanced surreptitiously at the door.（她偷偷瞄了一眼門口。）」 Because it describes an action, it is often used with verbs of looking and small movements因為它形容的是動作，所以常常搭配「看」和小動作的動詞 glance, check, slip, take, pass, remove像glance（瞄）、check（查看）、slip（悄悄放）、take（拿）、pass（遞）、remove（拿走）

The person is doing something a little bit not-allowed and does not want to be caught, though usually it is minor and even a bit funny.

The person is doing something a little bit not-allowed這個人在做一件有點不被允許的事 and does not want to be caught而且不想被抓到 though usually it is minor and even a bit funny不過通常事情不大，甚至還有點好笑

This is a formal, written word. In real speech, most people say "secretly", "quietly", "on the sly", or "without anyone noticing". You will meet surreptitiously most often in novels and news writing, where the writer wants one precise word instead of a phrase.

This is a formal, written word這是個正式的書面用字 In real speech, most people say "secretly", "quietly", "on the sly", or "without anyone noticing"在真實口語裡，大多數人會說「secretly偷偷地」、「quietly悄悄地」、「on the sly偷偷摸摸」，或「without anyone noticing沒被任何人發現」 You will meet surreptitiously most often in novels and news writing你最常在小說和新聞寫作裡遇到surreptitiously where the writer wants one precise word instead of a phrase因為作者想用一個精準的字，而不是一整個片語