來自古法語 sauf,安全的，受保護的，來自拉丁語 salvus,安全的，健康的，完整的，來自 PIE*sol, 完整的，整個的，詞源同 solid,save,salvation.字母 l 軟化為 u,最終脫落。引申詞義保險箱等。
英文詞源
safe
safe: [13] Like save, and indeed salvage and salvation, safe comes from Latin salvus ‘uninjured’. It reached English via Old French sauf. Salvus itself went back to a prehistoric Indo-European *solwos ‘whole’, which came from the same base that produced English soldier, solemn, and solid. The noun safe ‘strongbox’ [15] was originally save, a derivative of the verb, but by the late 17th century it had, under the influence of the adjective, become safe.
The plant-name sage [14] comes via Old French sauge from Latin salvia, etymologically the ‘healing’ plant, a derivative of salvus (English acquired salvia itself in the 19th century). => sage, salute, salvage, salvation, salvia, save, soldier, solemn, solid
safe (n.)
"chest for keeping food or valuables," early 15c., save, from Middle French en sauf "in safety," from sauf (see safe (adj.)). Spelling with -f- first recorded 1680s, from influence of safe (adj.).
safe (adj.)
c. 1300, "unscathed, unhurt, uninjured; free from danger or molestation, in safety, secure; saved spiritually, redeemed, not damned;" from Old French sauf "protected, watched-over; assured of salvation," from Latin salvus "uninjured, in good health, safe," related to salus "good health," saluber "healthful," all from PIE *solwos from root *sol- "whole" (cognates: Latin solidus "solid," Sanskrit sarvah "uninjured, intact, whole," Avestan haurva- "uninjured, intact," Old Persian haruva-, Greek holos "whole").
As a quasi-preposition from c. 1300, on model of French and Latin cognates. From late 14c. as "rescued, delivered; protected; left alive, unkilled." Meaning "not exposed to danger" (of places) is attested from late 14c.; of actions, etc., "free from risk," first recorded 1580s. Meaning "sure, reliable, not a danger" is from c. 1600. Sense of "conservative, cautious" is from 1823. Paired alliteratively with sound (adj.) from late 14c. The noun safe-conduct (late 13c.) is from Old French sauf-conduit (13c.).
雙語例句
1. Just play it safe, cover your ass, keep your head down.
要謹慎行事，保護好自己並保持低調。
來自柯林斯例句
2. Rock'n'roll has become so commercialised and safe since punk.
搖滾樂自從朋克樂以後就已經過於商業化而缺乏新意了。
來自柯林斯例句
3. I wanted to get her away to somewhere safe.
我想帶她逃到一個安全的地方。
來自柯林斯例句
4. In order to make it safe, the element is electrically insulated.
為安全起見，該元件作了電絕緣處理。
來自柯林斯例句
5. The nearest safe anchorage was in Halifax, Nova Scotia.