Word: 变幻莫测 (biànhuànmòcè) Traditional: 變幻莫測 变幻莫测 dictionary entry biànhuànmòcè to change unpredictably; unpredictable; erratic; treacherous Full dictionary entry for 变幻莫测 Example sentences using 变幻莫测 2 sentences, showing page 1 of 1. 他的情绪变幻莫测。 Tā de qíngxù biànhuànmòcè. His moods are erratic. 天气变幻莫测，带把伞吧。 Tiānqì biànhuànmòcè, dài bǎ sǎn ba. The weather is so unpredictable, so take an umbrella.