thumbsuck
noun /ˈθʌmsʌk/
/ˈθʌmsʌk/
[countable, usually singular, uncountable] (South African English, informal, often disapproving)- a guess or an estimate
猜测;估计 - Their sales projections are a total thumbsuck.
他们的销售量预测纯属估计。
- Their sales projections are a total thumbsuck.