in a businesslike manner, efficiently, competently, purposefully
Он говори́л о се́ксе в довольно делово́й мане́ре, пытаясь тем са́мым избежа́ть разгово́ров о свои́х пробле́мах в инти́мной жи́зни.
He spoke of sex in a rather businesslike manner, which was how he tried to avoid talking about his problems with intimacy.
