kái-khió改口

to change one's story

to change one's story; to correct oneself; to address someone by a different name; to change accent

English Wiktionary, “改口” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%94%B9%E5%8F%A3 · confidence: Medium (Wiktionary, Hokkien)