guesswork
🇺🇸
/ˈɡeswɜːrk/
🇬🇧
/ˈɡeswɜːk/
making an estimate or decision without enough information to be certain
It was just guesswork when we tried to predict the weather.
私たちが天気を予測しようと試みたとき、それはただの推測でした。