| 词汇 | as sharp as a tack |
| 释义 | Idiom as sharp as a tack(as) sharp as a tack very intelligent.He may be old in years, but he's still as sharp as a tack and knows what he's talking about. (as) sharp as a tackIntelligent and a quick-thinker. Ted's as sharp as a tack, so he'll find a solution to this problem. Of course Ellen is our valedictorian—she's as sharp as a tack. sharp as a tackAlso, sharp as a razor. Mentally acute. For example, She's very witty-she's sharp as a tack. These similes are also used literally to mean "having a keen cutting edge" and have largely replaced the earlier sharp as a needle or thorn. The first dates from about 1900, the variant from the mid-1800s. (as) sharp as a ˈtack(American English) intelligent with a quick and lively mind: My grandmother’s 85 but she’s still sharp as tack.A tack is a kind of small nail or pin. sharp as a tackSingularly keen or cutting; also, mentally acute. This simile has largely supplanted the earlier sharp as a razor, needle, vinegar, and thorn, the last dating from the fifteenth century and appearing in John Ray’s 1670 proverb collection. The current cliché dates from the late nineteenth or early twentieth century and appeared in a 1912 issue of Dialect Notes: “They won’t fool him; he’s sharp as tacks.” |
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