名詞 fast:

1. abstaining from food
   同義詞：fasting

動(dòng)詞 fast:

1. abstain from certain foods, as for religious or medical reasons
2. abstain from eating

形容詞 fast:

1. acting or moving or capable of acting or moving quickly
2. (used of timepieces) indicating a time ahead of or later than the correct time
3. at a rapid tempo
4. (of surfaces) conducive to rapid speeds
5. firmly fastened or secured against opening
   同義詞：barred, bolted, latched, locked, secured
6. resistant to destruction or fading
7. unrestrained by convention or morality
   同義詞：debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous
8. hurried and brief
   同義詞：flying, quick
9. securely fixed in place
   同義詞：firm, immobile
10. unwavering in devotion to friend or vow or cause
    同義詞：firm, loyal, truehearted

副詞 fast:

1. quickly or rapidly (often used as a combining form)
2. firmly or tightly
   同義詞：tight

1. They run faster and faster.
   他們跑得越來(lái)越快。
2. I like fast music.
   我喜歡節(jié)奏快的音樂(lè)。

fast

adj.（形容詞）
fast.er,fast.est
Acting, moving, or capable of acting or moving quickly; swift.
快的，敏捷的：行為的、動(dòng)作的，或能夠快速行為或運(yùn)動(dòng)的；敏捷的
Accomplished in relatively little time:
短暫的：很短時(shí)間內(nèi)完成的：
例句：
a fast visit.
短暫的拜訪

Indicating a time somewhat ahead of the actual time:
快的，稍早的：比準(zhǔn)確的時(shí)間提前一些的：
例句：
The clock is fast.
這個(gè)鐘快了

Adapted to or suitable for rapid movement:
適合快速運(yùn)動(dòng)的：
例句：
a fast running track.
快速跑道

Designed for or compatible with a short exposure time:
為短曝光的：為短曝光時(shí)間設(shè)計(jì)或與之相適宜的：
例句：
fast film.
感光快性膠片

Disposed to dissipation; wild:
行為放蕩的；粗野的：
例句：
ran with a fast crowd.
與一伙放蕩不羈的人交往

Flouting conventional moral standards; sexually promiscuous.
蔑視禮節(jié)的；性行為不檢點(diǎn)的
Resistant, as to destruction or fading:
不易毀壞或褪色的：
例句：
fast colors.
不易褪的顏色

Firmly fixed or fastened:
牢固的，緊緊的：牢固地連接或系住的：
例句：
a fast grip.
緊握

Fixed firmly in place; secure:
堅(jiān)牢的：連接得十分牢固的；安全的：
例句：
shutters that are fast against the rain.
能夠擋雨的百葉窗

Firm in loyalty:
忠誠(chéng)的：
例句：
fast friends.
忠誠(chéng)的朋友

Lasting; permanent:
永久的；永恒的：
例句：
fast rules and regulations.
永恒的法律和法規(guī)

Deep; sound:
深沉的；徹底的：
例句：
in a fast sleep.
睡得很熟

adv.（副詞）
In a secure manner; tightly:
緊緊地：以一種安全的方式；緊緊地：
例句：
hold fast.
緊緊地抓住

To a sound degree; deeply:
徹底地；深沉地：
例句：
fast asleep.
睡得很熟

In a rapid manner; quickly.
快速地；迅速地
In quick succession:
快速而連續(xù)不斷地：
例句：
New ideas followed fast.
新點(diǎn)子層出不窮

Ahead of the correct or expected time:
比正確或約定的時(shí)間提前地：
例句：
a watch that runs fast.
走得快的表

In a dissipated, immoderate way:
生活放蕩地：以放蕩的、無(wú)節(jié)制的方式：
例句：
living fast.
生活放蕩

Archaic Close by; near.
【古語(yǔ)】 接近；臨近

來(lái)源：
Middle English
中古英語(yǔ)
from Old English fôst [firm, fixed] * see past-
源自 古英語(yǔ) fôst [牢固的，結(jié)實(shí)的] *參見(jiàn) past-

<參考詞匯><同義詞>fast,rapid,swift,fleet,speedy,quick,hasty,expeditiousThese adjectives refer to something, such as activity or movement, marked by great speed.Fast and rapid are often used interchangeably, thoughfast is more often applied to the person or thing in motion, andrapid, to the activity or movement involved:
這些形容詞指活動(dòng)或運(yùn)動(dòng)極為快速的事物。Fast 和 rapid 通?？梢曰Q， 然而fast 更多指運(yùn)動(dòng)中的人或物， 而rapid 指相關(guān)的活動(dòng)或運(yùn)動(dòng)：
例句：
a fast car;
飛馳的汽車；

例句：
a fast plane;
快的飛機(jī)；

例句：
a rapid mountain stream;
輕快的山溪；

例句：
rapid development;
快速的發(fā)展；

例句：
a fast runner;
快跑者；

例句：
rapid strides.
快步走。

Swift suggests smoothness and sureness of movement (
Swift 指運(yùn)動(dòng)的流暢性與穩(wěn)靠性(
例句：
a swift current;
穩(wěn)定的電流；

例句：
swift but unclear handwriting), andfleet, lightness of movement (
流暢但不清楚的書法筆跡)， 和fleet， 指動(dòng)作的輕盈(

例句：
The cheetah is the fleetest of animals).
獵豹是最輕捷的動(dòng)物)。

Speedy refers to velocity (a speedy worker ) or to promptness or hurry (
Speedy 指速度(速度快的工人 ) 或指快速或匆忙(
例句：
hoped for a speedy resolution to the problem).
期待著問(wèn)題的快速解決)。

Quick most often applies to what takes little time or to promptness of response or action:
Quick 大多指花費(fèi)極少時(shí)間或反應(yīng)或動(dòng)作的敏捷：
例句：
Let`s eat a quick snack.
讓我們吃一頓快餐吧!

例句：
Only her quick reaction prevented an accident.
她的快捷反應(yīng)避免了一次事故。

Hasty implies hurried action (
Hasty 指匆忙的行為(
例句：
a hasty visit) and often a lack of care or thought (
一次匆忙的拜訪)， 且通常指粗心或少加思索(

例句：
regretted the hasty decision).
令人遺憾且草率的決定)。

Expeditious suggests rapid efficiency:
Expeditious 指快速有效的：
例句：
sent the package by the most expeditious means. See also Synonyms at faithful
以最快速有效的方式送包裹 參見(jiàn)同義詞 faithful


---------------另--------------
fast
fast 2

v.intr.（不及物動(dòng)詞）
fast.ed,fast.ing,fasts
To abstain from food.
絕食：拒絕吃食物
To eat very little or abstain from certain foods, especially as a religious discipline.
禁食，齋戒：少吃或不吃某些食物，特指宗教戒律
n.（名詞）
The act or practice of abstaining from or eating very little food.
斷食，節(jié)食：不吃或少吃食物的行為
A period of such abstention or self-denial.
斷食期，節(jié)食期：這種戒除或自我克制的時(shí)期

來(lái)源：
Middle English fasten
中古英語(yǔ) fasten
from Old English fôstan * see past-
源自 古英語(yǔ) fôstan *參見(jiàn) past-