guesswork

US /ˈɡes.wɝːk/
UK /ˈɡes.wɝːk/
"guesswork" picture
1.

推測, 当て推量

the process of making a judgment or decision without having enough information to know for certain what is correct or true

:
The exact number of attendees is still a matter of guesswork.
出席者の正確な数はまだ推測の域を出ません。
Much of the early research involved a lot of guesswork.
初期の研究の多くは、多くの推測を含んでいた。