昔 Xī/xī, surname Xi, former times/the past/Taiwan pr. [xí] 昔日 xīrì, formerly/in olden days 往昔 wǎngxī, the past 今非昔比 jīnfēixībǐ, things are very different now (idiom)/times have changed 今昔 jīnxī, past and present/yesterday and today 今不如昔 jīnbùrúxī, things are not as good as they used to be 修昔底德 Xiūxīdǐdé, Thucydides (c. 455 - c. 400 BC), Greek historian, author of the History of the P... 修昔底德陷阱 Xiūxīdǐdéxiànjǐng, Thucydides trap (theory that war results when a dominant established power fears... 古昔 gǔxī, (literary) ancient times/in olden days 奶昔 nǎixī, milkshake (Note: 昔[xī] is loaned from English "shake" via Cantonese 昔, pr. sīk) 宿昔 sùxī, formerly/in the past 昔年 xīnián, former years/previous years 昔阳 Xīyáng, [昔陽], Xiyang county in Jinzhong 晉中|晋中[Jìn zhōng], Shanxi 昔阳县 Xīyángxiàn, [昔陽縣], Xiyang county in Jinzhong 晉中|晋中[Jìn zhōng], Shanxi 美洛昔康 měiluòxīkāng, meloxicam (anti-inflammatory drug) 阿昔洛韦 āxīluòwéi, [阿昔洛韋], aciclovir (also spelled acyclovir), antiviral drug