| 单词 | fast |
| 释义 | fast fast1 /fast, fahst/, adj., faster, fastest, adv., faster, fastest, n. adj. 1. moving or able to move, operate, function, or take effect quickly; quick; swift; rapid: a fast horse; a fast pain reliever; a fast thinker. 2. done in comparatively little time; taking a comparatively short time: a fast race; fast work. 3. (of time) a. indicating a time in advance of the correct time, as of a clock. b. noting or according to daylight-saving time. 4. adapted to, allowing, productive of, or imparting rapid movement: a hull with fast lines; one of the fastest pitchers in baseball. 5. characterized by unrestrained conduct or lack of moral conventions, esp. in sexual relations; wanton; loose: Some young people in that era were considered fast, if not downright promiscuous. 6. characterized by hectic activity: leading a fast life. 7. resistant: acid-fast. 8. firmly fixed in place; not easily moved; securely attached. 9. held or caught firmly, so as to be unable to escape or be extricated: an animal fast in a trap. 10. firmly tied, as a knot. 11. closed and made secure, as a door, gate, or shutter. 12. such as to hold securely: to lay fast hold on a thing. 13. firm in adherence; loyal; devoted: fast friends. 14. permanent, lasting, or unchangeable: a fast color; a hard and fast rule. 15. Informal. a. (of money, profits, etc.) made quickly or easily and sometimes deviously: He earned some fast change helping the woman with her luggage. b. cleverly quick and manipulative in making money: a fast operator when it comes to closing a business deal. 16. Photog. a. (of a lens) able to transmit a relatively large amount of light in a relatively short time. b. (of a film) requiring a relatively short exposure time to attain a given density. 17. Horse Racing. a. (of a track condition) completely dry. b. (of a track surface) very hard. 18. pull a fast one, Informal. to play an unfair trick; practice deceit: He tried to pull a fast one on us by switching the cards. adv. 19. quickly, swiftly, or rapidly. 20. in quick succession: Events followed fast upon one another to the crisis. 21. tightly; firmly: to hold fast. 22. soundly: fast asleep. 23. in a wild or dissipated way. 24. ahead of the correct or announced time. 25. Archaic. close; near: fast by. 26. play fast and loose. See play (def. 76). n. 27. a fastening for a door, window, or the like. [bef. 900; ME; OE faest firm; c. D vast, ON fastr firm, G fest; akin to FAST2] Syn. 1, 2. fleet, speedy. See quick. 5. dissipated, dissolute, profligate, immoral; wild, prodigal. 8. secure, tight, immovable, firm. 9. inextricable. 13. faithful, steadfast. 14. enduring. 21. securely, fixedly, tenaciously. 23. recklessly, wildly, prodigally. Ant. 1, 2. slow. 5, 6. restrained. 8. loose. fast2 /fast, fahst/, v.i. 1. to abstain from all food. 2. to eat only sparingly or of certain kinds of food, esp. as a religious observance. v.t. 3. to cause to abstain entirely from or limit food; put on a fast: to fast a patient for a day before surgery. n. 4. an abstinence from food, or a limiting of one's food, esp. when voluntary and as a religious observance; fasting. 5. a day or period of fasting. [bef. 1000; ME fasten, OE faestan; c. G fasten, Goth fastan, ON fasta] fast3 /fast, fahst/, n. a chain or rope for mooring a vessel. [1670-80; alter., by assoc. with FAST1, of late ME fest, perh. n. use of fest, ptp. of festen to FASTEN, or < ON festr mooring rope] |
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