Question

fast n.绝食，斋戒；adv.很快地，紧紧地 fast (adj.) Old English fæst "firmly fixed, steadfast, secure, enclosed," probably from Proto-Germanic *fastuz (cognates: Old Frisian fest, Old Norse fastr, Dutch vast, German fest), from PIE root *past- "firm" (source of Sanskrit pastyam "dwelling place").The adverb meaning "quickly, swiftly" was perhaps in Old English, or from Old Norse fast, either way developing from the sense of "firmly, strongly, vigorously" (to run hard means the same as to run fast; also compare fast asleep), or perhaps from the notion of a runner who "sticks" close to whatever he is chasing.The sense of "living an unrestrained life" (usually of women) is from 1746 (fast living is from 1745). Fast buck recorded from 1947; fast food is first attested 1951. Fast-forward first recorded 1948. Fast lane is by 1966; the fast track originally was in horse-racing (1934); figurative sense by 1960s. To fast talk someone (v.) is recorded by 1946.fast (v.) Old English fæstan "to fast" (as a religious duty), from Proto-Germanic *fastejan (cognates: Old Frisian festia, Old High German fasten, German fasten, Old Norse fasta), from the same root as fast (adj.).The original meaning was "hold firmly," and the sense evolution is via "firm control of oneself," to "holding to observance" (compare Gothic fastan "to keep, observe," also "to fast"). Presumably the whole group is a Germanic translation of Medieval Latin observare "to fast." Related: Fasted; fasting.fast (n.) Old English fæstan, festen, or Old Norse fasta; from the root of fast (v.). 【记】fat 加个s(瘦) 就是反意了，要减肥；音：肥瘦她

Accepted Answer

[fɑ:st] 【考】 fast : eat / respite : labor / moratorium : act(斋戒是暂时停止进餐 /休息是暂时停止劳动 /延迟是暂时停止行动)反义词: loosely attach(宽松地连接) n. 绝食; 斋戒(宗教戒律: 少吃或不吃某些食物); adj 牢固的(紧的牢固地连接或系住的) = firm = solidly = steadfastly = tightly【记】fast绝食要慢慢来, 不能fast【参】fasting(adj 禁食的n 禁食)【类】fast: eat = respite: labor = moratorium: act斋戒是暂停进餐 = 间歇是暂停劳动 = 活动中止是暂停行动【反】loosely attach(宽松的连接)

单词	fast
音标	[fɑ:st]
解释	n.绝食，斋戒；adv.很快地，紧紧地
红宝书	【考】 fast : eat / respite : labor / moratorium : act(斋戒是暂时停止进餐 /休息是暂时停止劳动 /延迟是暂时停止行动)反义词: loosely attach(宽松地连接)
字源	fast (adj.) Old English fæst "firmly fixed, steadfast, secure, enclosed," probably from Proto-Germanic fastuz (cognates: Old Frisian fest, Old Norse fastr, Dutch vast, German fest), from PIE root past- "firm" (source of Sanskrit pastyam "dwelling place"). The adverb meaning "quickly, swiftly" was perhaps in Old English, or from Old Norse fast, either way developing from the sense of "firmly, strongly, vigorously" (to run hard means the same as to run fast; also compare fast asleep), or perhaps from the notion of a runner who "sticks" close to whatever he is chasing. The sense of "living an unrestrained life" (usually of women) is from 1746 (fast living is from 1745). Fast buck recorded from 1947; fast food is first attested 1951. Fast-forward first recorded 1948. Fast lane is by 1966; the fast track originally was in horse-racing (1934); figurative sense by 1960s. To fast talk someone (v.) is recorded by 1946. fast (v.) Old English fæstan "to fast" (as a religious duty), from Proto-Germanic *fastejan (cognates: Old Frisian festia, Old High German fasten, German fasten, Old Norse fasta), from the same root as fast (adj.). The original meaning was "hold firmly," and the sense evolution is via "firm control of oneself," to "holding to observance" (compare Gothic fastan "to keep, observe," also "to fast"). Presumably the whole group is a Germanic translation of Medieval Latin observare "to fast." Related: Fasted; fasting. fast (n.) Old English fæstan, festen, or Old Norse fasta; from the root of fast (v.).
不择手段背单词	n. 绝食; 斋戒(宗教戒律: 少吃或不吃某些食物); adj 牢固的(紧的牢固地连接或系住的) = firm = solidly = steadfastly = tightly 【记】fast绝食要慢慢来, 不能fast 【参】fasting(adj 禁食的n 禁食) 【类】fast: eat = respite: labor = moratorium: act斋戒是暂停进餐 = 间歇是暂停劳动 = 活动中止是暂停行动【反】loosely attach(宽松的连接)
趣味全助记	【记】fat 加个s(瘦) 就是反意了，要减肥；音：肥瘦她

Fast Norse Sense English German Root Recorded Eat