guesswork

UK
/ˈɡɛswɜːk/
US
/ˈɡɛswɜrk/

Examples

Estimates on the amount of syphilis which is contracted in marriage are apt to be largely guesswork in the absence of reliable vital statistics on the disease.

Faute de statistiques sanitaires fiables sur la maladie, les estimations de la syphilis contractée dans le mariage relèvent souvent largement de la conjecture.