khī-khōng-khiàu欹空翹

to be unstable or to fall over due to an uneven

to be unstable or to fall over due to an uneven floor or uneven legs (of tables, chairs, etc.)

English Wiktionary, “欹空翹” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%AC%B9%E7%A9%BA%E7%BF%B9 · confidence: Medium (Wiktionary)