adj(1) 快的，敏捷的，迅速的(moving quickly;rapid)：a～game/reader/train 速度很快的比赛/快速阅读者/快车;～food 快餐;～work/music 迅速完成的工作/节奏很快的音乐;do a～job 工作做得很快;make a～trip/retreat 匆匆地旅行/迅速地撤退;Monkeys are very～animals. 猴子是很敏捷的动物。〖同〗 swift，quick，rapid，hasty，speedy;〖反〗 slow;

(2) 适合快速移动的(suitable for rapid movement)：the～lane on a motorway 公路上的快车道;The racecourse is～er when it's dry than when it's wet. 赛道在干燥时比潮湿时利于车子跑得更快。

(3) (钟表) 偏快的(showing a time in advance of the correct time)：My watch/clock is (ten minutes)～. 我的手表/闹钟快了(10分钟)。〖同〗 ahead;〖反〗 slow;

(4) 放荡的(disregarding conventional or moral standards;fond of spending too much time and money on pleasure)：a～woman/liver 荡妇/浪荡子;lead a～life 过放荡的生活;have a reputation of being～有放荡的坏名声;〖同〗 wild，immoral，loose;〖反〗 upright，moral，steady，virtuous;

(5) 紧的，牢固的，稳定的(made firm;unlikely to move;fixed) [多作 pred]：keep/take a～grip/hold on sth 紧紧地抓住某物;be (stuck)～in the mud 牢牢地陷在泥中;Make sure the window/the boat is (made)～. 一定要把窗户关牢/把船泊好。make～the end of a rope to a post 将绳子的一头紧紧地拴在杆子上;〖同〗 secure，fastened，firm，steady，immovable，tight;〖反〗 loose，weak，movable，insecure，unstable;

(6) 忠实的，可靠的(loyal;firm) [作 attrib]：a～friend/friendship 忠实的朋友/持久的友谊;〖同〗 firm，enduring，durable，steady，loyal，devoted，lasting，faithful;〖反〗 unsteady，unstable，disloyal，unfaithful;

(7) 不易褪色的，耐久的(not liable to fade;permanent)：～colour(s) 经久的颜色;This colour is～which will not wash out. 这种颜色耐水洗，不易褪色。〖同〗permanent，lasting，durable，unfading;

→′fastness n 坚固，迅速;

adv(1) 快(地)，迅速地(quickly;rapidly)：Take care! You are driving too～. 小心! 你开车太快。The lecturer spoke so～we could hardly follow him. 演讲人说得太快，我们几乎听不懂他在说些什么。He can swim～er than you can. 他游泳比你游得快。It's raining very～. 雨下得很急。〖同〗swiftly，rapidly，hurriedly;〖反〗slow(ly);

(2) 紧紧地， 牢固地， 坚定地 (firmly; securely)：hold sth～/hold～to sth 牢牢地抓住某物;stand～against sb 在某人面前表现得很坚定;The window was～shut. 窗户紧闭着。be caught～in the trap 牢牢地困在陷阱里;be stuck～in the mud 深深地陷在泥里;〖同〗 firmly，fixedly，tightly，securely，immovably，solidly;〖反〗 loosely，insecurely;

(3) 完全地，深深地，酣畅地(deeply;soundly)：be～asleep 酣睡;〖同〗soundly，fully，completely;

(4) (钟表) 偏快地(ahead of the correct time)：My watch is running～again. 我的表又快了。〖同〗ahead;〖反〗slow，behind，late;

fast and furious 拼命地;飞快地：work～and furious 拼命工作;

hold fast to sth 坚持(信)：hold～to one's principles 坚持原则;

play fast and loose (with sb/sth) 玩弄感情，行为不负责任：play～and loose with a girl's feelings/with an agreement 玩弄一个女孩子的感情/对协议出尔反尔