› able to judge people and situations well and make good decisions: My one big regret is about money - I wish I'd been more shrewd. Simon is an extremely shrewd businessman. The time is ripe for shrewd investors to make a killing on investment trusts.
› based on good understanding or judgment: The banks have probably taken a shrewd decision selling some stock now. Shrewd investment in American property soon reaped Gilbert a second fortune. Looking to the East to invest might be a shrewd move. shrewdly adverb › He shrewdly invested his earnings.