|Origin:||shrew in the old meaning 'very bad man'|
good at judging what people or situations are really like:
Malcolm is a shrewd businessman.
She was shrewd enough to guess who was responsible.
Capra looked at her with shrewd eyes.
well judged and likely to be right:
a shrewd decision
Bridget has a shrewd idea of what will sell.
'Something tells me you've already decided,' he said shrewdly.
—shrewdness noun [uncountable]