動詞
偷偷哋笑；靜靜雞笑；收收埋埋咁笑；唔張揚咁笑 to snicker; to titter; to laugh in a suppressed way
Definitions (Wiktionary)
verb
to giggle; to silently giggle; to secretly laugh; to laugh in one's sleeve
verb, figuratively
to be content or grateful that even something less than ideal occurs
冰館都關門了，沒人潮了，怎麼可能有人願意花這麼多錢買這個店面，若是五千萬元成交都偷笑了！
冰馆都关门了，没人潮了，怎么可能有人愿意花这么多钱买这个店面，若是五千万元成交都偷笑了！
bīng guǎn dōu guān mén le ， méi rén cháo le ， zěn me kě néng yǒu rén yuàn yì huā zhè me duō qián mǎi zhè ge diàn miàn ， ruò shì wǔ qiān wàn yuán chéng jiāo dōu tōu xiào le ！ The shaved ice shop is closing, and the tide of people has died down. Who would be willing to buy this shop with such a large sum? If the deal can be closed with 50 million dollars, I'd be content with it!
“你為什麼不給我單獨訂一間房？”夏宇不爽地問我。 “我出錢，你有地方住就該偷笑了！還應該愉快的説謝謝呢！”
“你为什么不给我单独订一间房？”夏宇不爽地问我。 “我出钱，你有地方住就该偷笑了！还应该愉快的说谢谢呢！”
“ nǐ wèi shén me bù gěi wǒ dān dú dìng yī jiān fáng ？ ” xià yǔ bù shuǎng dì wèn wǒ ． 5 “ wǒ chū qián ， nǐ yǒu dì fāng zhù jiù gāi tōu xiào le ！ hái yìng gāi yú kuài de shuō xiè xiè ne ！ ” "Why didn't you book a separate room for me?" Xia Yu asked me in a bad mood. "I'm paying, so you should just be content that you even have a place to live in! You should actually say thank you gladly!"
Definitions (Kaifangcidian)
（沒有對應漢語詞彙）
Examples (Tatoeba—Mandarin-English)
Mandarin
看到老师穿反了衣服，学生们偷偷笑了。
看到老師穿反了衣服，學生們偷偷笑了。
kàn dào lǎo shī chuān fǎn le yī fu ， xué sheng men tōu tōu xiào le 。
The students laughed under their breath when they saw that the teacher had put on his sweater backwards.
Making a fortune? One should be blissful that it still survives!
Cantonese
偷笑
偷笑
tau1 siu3
to laugh up one's sleeve
Examples (Wiktionary)
Mandarin
冰馆都关门了，没人潮了，怎么可能有人愿意花这么多钱买这个店面，若是五千万元成交都偷笑了！
冰館都關門了，沒人潮了，怎麼可能有人願意花這麼多錢買這個店面，若是五千萬元成交都偷笑了！
bīng guǎn dōu guān mén le ， méi rén cháo le ， zěn me kě néng yǒu rén yuàn yì huā zhè me duō qián mǎi zhè ge diàn miàn ， ruò shì wǔ qiān wàn yuán chéng jiāo dōu tōu xiào le ！
The shaved ice shop is closing, and the tide of people has died down. Who would be willing to buy this shop with such a large sum? If the deal can be closed with 50 million dollars, I'd be content with it!
Mandarin
“你为什么不给我单独订一间房？”夏宇不爽地问我。“我出钱，你有地方住就该偷笑了！还应该愉快的说谢谢呢！”
“你為什麼不給我單獨訂一間房？”夏宇不爽地問我。“我出錢，你有地方住就該偷笑了！還應該愉快的説謝謝呢！”
“ nǐ wèi shén me bù gěi wǒ dān dú dìng yī jiān fáng ？ ” xià yǔ bù shuǎng dì wèn wǒ ． 5 “ wǒ chū qián ， nǐ yǒu dì fāng zhù jiù gāi tōu xiào le ！ hái yìng gāi yú kuài de shuō xiè xiè ne ！ ”
"Why didn't you book a separate room for me?" Xia Yu asked me in a bad mood. "I'm paying, so you should just be content that you even have a place to live in! You should actually say thank you gladly!"