background/bottom/base/end (of the month, year etc)/remnants/draft / master copy/negatives (of photograph)/heart of the matter/what/a hundred thousand dollars worth of dead chips used in gambling/a strategy/a secret/identity/past record/triad status
Definitions (粵典–words.hk)
量詞
糕點、雞蛋等嘅量詞，一底大約係一盤 a large container of cakes or eggs
一底年糕
一底年糕
jat1 dai2 nin4 gou1 a large container of new year cake
一底雞蛋仔
一底鸡蛋仔
jat1 dai2 gai1 daan6 zai2 a pack of egg waffles
一底雞蛋30隻太多，我通常都係買半底。
一底鸡蛋30只太多，我通常都系买半底。
jat1 dai2 gai1 daan2 saam1 sap6 zek3 taai3 do1, ngo5 tung1 soeng4 dou1 hai6 maai5 bun3 dai2. A pack of egg contains 30 eggs, which is too much for me. I usually buy only half a pack.
詞綴
年份或者月份就完嘅嗰段時間 end of a year or month
六月底
六月底
luk6 jyut6 dai2 the end of June
年底
年底
nin4 dai2 the end of a year
名詞
物體最下方嘅部分 bottom; base
海底
海底
hoi2 dai2 bottom of the sea; sea bed
餅底
饼底
beng2 dai2 bottom of a cake
底部
底部
dai2 bou6 base; bottom
底層
底层
dai2 cang4 base; ground floor
摸酒杯底
摸酒杯底
mo2 zau2 bui1 dai2 to have a drink (alcohol); literally: to touch the bottom of the wine glass
呢個池深到對腳都掂唔到底，唔係咁適合游水。
呢个池深到对脚都掂唔到底，唔系咁适合游水。
ni1 go3 ci4 sam1 dou3 deoi3 goek3 dou1 dim3 m4 dou2 dai2, m4 hai6 gam3 sik1 hap6 jau4 seoi2. This pool is too deep for swimming—my feet can't touch the bottom.
名詞
背景；下低、後面嘅平面 background; ground
白底黑字
白底黑字
baak6 dai2 haak1 zi6 black words on a white background
一條藍底白點嘅裙
一条蓝底白点嘅裙
jat1 tiu4 laam4 dai2 baak6 dim2 ge3 kwan4 a skirt with white dots on a blue background
你最好留返個底。
你最好留返个底。
nei5 zeoi3 hou2 lau4 faan1 go3 dai2. You'd better keep a copy of the original.
名詞
內褲（量詞：條） lower undergarments; underpants
人哋話着紅底會好運啲㗎。
人哋话着红底会好运啲㗎。
jan4 dei6 waa6 zoek3 hung4 dai2 wui5 hou2 wan6 di1 gaa3. People say wearing red underpants will bring you good luck.
佢踎低嗰陣時露底 啊。
佢踎低𠮶阵时露底 啊。
keoi5 mau1 dai1 go2 zan6 si2 lou6 dai2 aa3. He accidentally revealed his underpants when he squatted.
名詞
基礎 grounding; foundation
數底
数底
sou3 dai2 foundation in math
底薪
底薪
dai2 san1 basic salary
佢英文個底打得好好。
佢英文个底打得好好。
keoi5 jing1 man2 go3 dai2 daa2 dak1 hou2 hou2. She has a good foundation in English.
名詞
背景資料 background information
底細
底细
dai2 sai3 someone's background
起底
起底
hei2 dai2 to check up on someone's background
班行家仲摸緊呢間新網媒究竟咩底。
班行家仲摸紧呢间新网媒究竟咩底。
baan1 hong4 gaa1 zung6 mo2 gan2 ni1 gaan1 san1 cyun4 mui4 gau3 ging2 me1 dai2. The professionals are still feeling out the background of this new online media.
你最好查一查佢個底，我聽講佢以前坐過幾年監。
你最好查一查佢个底，我听讲佢以前坐过几年监。
nei5 zeoi3 hou2 caa4 jat1 caa4 keoi5 go3 dai2, ngo5 teng1 gong2 keoi5 ji5 cin4 co5 gwo3 gei2 nin4 gaam1. You'd better check his background - I heard that he's spent a couple of years in prison.
名詞
用喺講述某人嘅本質同特徵，例如體質、體型、性格等 someone's properties and characteristics
friend底
friend底
fen1 dai2 in a friendly relationship; in a companionship
肥底
肥底
fei4 dai2 a tendency to accumulate fat
燥底
燥底
cou3 dai2 bad-tempered
淫底
淫底
jam4 dai2 concupiscent; libidinous
乖底嘅人曳極都曳唔出樣。
乖底嘅人曳极都曳唔出样。
gwaai1 dai2 ge3 jan4 jai1 gik6 dou1 jai1 m4 ceot1 joeng2. People who are inherently good-hearted can't be naughty no matter how hard they try.
Definitions (Wiktionary)
character
base (of triangle, logarithm, etc.)
character, Min-Nan
inside
character, Cantonese, Hong-Kong
tendency in one's personality; leaning
燥底
燥底
cou3 dai2 bad-tempered
紅底
红底
hung4 dai2 having pro-CCP leanings
M底
M底
em1 dai2 having a masochistic side
character
remnants; remains; leftovers
character
ground; background
character
master copy
character
bottom; underneath; underside
character, Cantonese, Hong-Kong
criminal record
佢個底花嗮
佢个底花嗮
keoi5 go3 dai2 faa1 saai3 His criminal record is all dirty and messy.
character
end (of a year or month)
六月底
六月底
luk6 jyut6 dai2 the end of June
character, Cantonese
staple food as the base of a meal
伊麵底
伊面底
ji1 min6 dai2 e-fu noodles as the base (e.g., for lobster)
加底
加底
gaa1 dai2 to add rice in a meal
character
ins and outs; actual situation
character, Cantonese
underpants (Classifier: 條／条 c)
紅底
红底
hung4 dai2 having pro-CCP leanings
露底
露底
lou6 dai2 to expose one's underpants
character, Min
which; what (syn.) 何, 選, 底, 佗, 若, 哪, 邊, 孰, 狃
Definitions (Unihan)
bottom, underneath, underside
Cangjie Input
IHPM
Definitions (HSK3.0)
HSK3 四级词汇表 #180
HSK3 三级汉字表 #40
HSK3 高等手写字表 #78
底 [－]
Jyutping
dai2
Pinyin
de
Definitions (CC-CEDICT)
(equivalent to 的 as possessive particle)
Definitions (Wiktionary)
character, obsolete
possessive particle, equivalent to modern Mandarin 的 (de)
Examples (Tatoeba—Mandarin-English)
Mandarin
Tom躲在桌子底下。
Tom躲在桌子底下。
tom duǒ zài zhuō zi dǐ xia 。
Tom hid under the table.
Tom hid himself under the table.
Tom was hiding under the table.
Mandarin
他们的合同在这个月底到期。
他們的合同在這個月底到期。
tā men de hé tong zài zhè ge yuè dǐ dào qī 。
Their contract is to run out at the end of this month.
Mandarin
Ken七月底要去美国了。
Ken七月底要去美國了。
ken qī yuè dǐ yào qù měi guó le 。
Ken is going to the United States at the end of July.
Mandarin
这个月底前，我们必须交报告。
這個月底前，我們必須交報告。
zhè ge yuè dǐ qián ， wǒ men bì xū jiāo bào gào 。
We have to turn in our reports by the end of this month.
We have to submit the report by the end of the month.
Mandarin
自己生了孩子后才明白母爱到底是怎么一回事。
自己生了孩子後才明白母愛到底是怎麼一回事。
zì jǐ shēng le hái zi hòu cái míng bai mǔ ài dào dǐ shì zěn me yī huí shì 。
It was not until I had a baby myself that I knew what mother's love is.