底
dǐde HSK3

bottom

底 dǐ frequency
bottom directional
the lowest part of something

他潜到了水底。

tā qián dào le shuǐ dǐ.

He dove to the bottom of the water.

end directional
the end of a period of time, such as a month or a year

我们打算在今年六月底全家去海边旅游。

wǒ​men dǎ​suàn zài jīn​nián Liù​yuè dǐ quán​jiā qù hǎi​biān lǚ​yóu.

Our whole family plans to go to the seaside at the end of June.

background directional
background color, foundation, or the base level of something

这块布是蓝底红花的。

zhè kuài bù shì lán dǐ hóng​huā de.

This fabric has a blue background with a red floral pattern.

base noun
a base or radix in mathematics

在对数运算中，我们通常把十作为底。

zài duì​shù yùn​suàn zhōng, wǒ​men tōng​cháng bǎ shí zuò​wéi dǐ.

In logarithms, we usually take ten as the base.

record directional
a draft, copy, or original manuscript kept as a record

发信前请留个底。

fā​xìn qián qǐng liú gè dǐ.

Please keep a copy for your records before sending the letter.

底 de
possessive particle noun
Equivalent to 的 de as a possessive particle.

这个水坑很深，一眼望不到底。

zhè​ge shuǐ​kēng hěn shēn, yī yǎn wàng bù dào de.

The puddle is very deep, and you can't see the bottom at a glance.

Frequency
Character
Written text
543rd most common 391.4 per million
Movie subtitles
353rd most common 431.5 per million appears in 87% of films
Word
Movie subtitles
117.0 per million appears in 41% of films
Written text
141.6 per million

Details
HSK 2.0
Level 4
HSK 3.0
Level 3
Strokes
8
Unicode
U+5E95

Sources
Definitions
CC-CEDICT
Frequency data
MTSU Chinese text computingSUBTLEX-CHBCC Corpus (BLCU)