tip (v.1)

约于1300年，“推倒，翻倒，倾斜”（及物动词），起源不明，可能来自斯堪的纳维亚语（比较瑞典语 tippa “倾斜，倾倒”），或者来自 tip（名词）的特殊用法。不及物动词“倒下，翻倒”始于15世纪中期。相关词汇： Tipped； tipping。1879年，“tip the scales at”表示“称重（如此重）”。1972年，“Tipping point”出现。1907年，“tip (one's) hand”表示“透露某人的意图”，来自打扑克牌的形象。

约于1400年，“某物的极端端点，圆形或尖形物体的顶部，某物末端的金属附件”，源自中低地德语或中荷兰语的 tip “极点，极端，尖端”（类似于德语的 zipfel，是一个小型构词法）； 或者来自斯堪的纳维亚语源头（类似于古诺尔斯语的 typpi）。

“give a small present of money to,” was originally “to give, hand, pass,” used in thieves’ cant around 1600, and may have come from tip (v.3) “to tap.” The meaning “give a gratuity to” was first recorded in 1706. The noun with the same meaning first appeared in 1755. The noun “tip” meaning “a piece of confidential information” is from 1845, and the verb meaning “to give private information to” is from 1883.

The tale of the word's supposed origin as an acronym in 18th-century English taverns became popular in mid-18th century, but seems to be no older than Frederick W. Hackwood's 1909 book, "Inns, Ales and Drinking Customs of Old England." The book claims it stands for To insure promptitude (the anecdote is told from 1946 in the form to insure promptness ). A review of the book in The Athenaeum of Oct. 2, 1909, criticized this story and wrote, "We deprecate the careless repetition of popular etymologies such as the notion that 'tip' originated from an abbreviated inscription on a box placed on the sideboard in old coaching-inns, the full meaning of which was 'To Insure Promptitude.'” For more information, see here.

约于1200年，意为“突然袭击、发生”，起源不明，可能来自低地德语 tippen “轻触、轻碰”，与中低地德语 tip “末端、尖端”有关，因此与 tip（名词）有关； 或者与 tap（动词1）有关。意为“轻轻地猛击”始于1560年代。体育意义最早见于1816年的板球运动。相关词汇： Tipped； tipping。

"轻微的、尖锐的打击或轻敲"，15世纪中期，来自 tip（v.3）。

"在顶部放置小费，用小费装饰"，14世纪晚期，来自 tip（名词）或古诺尔斯语 typpa。相关词汇： Tipped； tipping。