PIE *weid, lookから。語源的にはvision, wiseと同じ。古くは服装、外見、後に蔑称。
英語の語源
guise
guise: see geezer
guise (n.)
late 13c., "style or fashion of attire," from Old French guise "manner, fashion, way," from Frankish *wisa or some similar Germanic source, from Proto-Germanic *wison "appearance, form, manner," from *wissaz (cognates: Old High German wisa "manner, wise"), from PIE root *weid- "to see" (see vision). Sense of "assumed appearance" is from 1660s, from earlier meaning "mask, disguise" (c. 1500).
例文
1. His speech presented racist ideas under the guise of nationalism.
彼の発言はナショナリズムを看板に人種主義思想を宣伝している。
＜dl>＜dt＞2.They got into the school in the guise of inspectors.
彼らは視察員のふりをして学校に入った。
3.He turned up at a fancy dress Easter dance in the guise of a white rabbit.
彼は白ウサギに扮してイースター仮装舞踏会に登場した。
4.In this guise he gathered information about mutinous and subversive designs.
という名目で、彼は裏切りや転覆活動の陰謀計画の情報を収集した。
＜dl>＜dt＞5.A lot of nonsense was talked，under the guise of philosophy.