1) Capable but unenthusiastic 2) Efficient 1) Efficient 2) No-nonsense 3) Purposeful 
• (a.) In the manner of one transacting business wisely and by right methods.
Busi'ness·like` adjective In the manner of one transacting business wisely and by right methods. 
[adj] - not distracted by anything unrelated to the goal 2. [adj] - exhibiting methodical and systematic characteristics that would be useful in business
earnest adjective not distracted by anything unrelated to the goal
conforming to, attending to, or characteristic of business. · efficient, practical, or realistic. · capable but unenthusiastic.