| 杞人之忧 | [ qǐ rén zhī yoū ] man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞人忧天 | [ qǐ rén yoū tiān ] man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞国 | [ qǐ guó ] the State of Qǐ in modern Qǐ county 杞縣|杞县, Henan (c. 1500-445 BC), a small vassal state of Shang and Western Zhou for most of its existence |
| 杞国之忧 | [ qǐ guó zhī yoū ] man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞国忧天 | [ qǐ guó yoū tiān ] man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞天之虑 | [ qǐ tiān zhī lǜ ] man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞妇 | [ qǐ fù ] the wife of 杞梁[Qi3 Liang2], a senior official of the state of Qi 杞[Qi3] who died on a military expedition, (fig.) a widow |
| 杞县 | [ qǐ xiàn ] Qi county in Kaifeng 開封|开封[Kai1 feng1], Henan |