From Longman Dictionary of Contemporary Englishcalculatingcal‧cu‧lat‧ing /ˈkælkjəleɪtɪŋ/ adjectiveBAD PERSONthinking carefully about how to get exactly what you want, often without caring about anyone else – used to show disapproval
He gave her a calculating look.Examples from the Corpuscalculating• Over the years his experiences had turned him into someone who was both calculating and ruthless.• Mr Reagan pulled off his political con-trick through a mixture of calculatingcharm and genuine niceness.• She was a cold, calculatingcriminal.• How strange to think that Luke's calculatingmessage had been lying here in the shop since the day before.• Yarbrough was a calculatingtroublemaker.