Source : Webster's Revised Unabridged Dictionary (1913)

Businesslike \Busi"ness*like`\, a.
   In the manner of one transacting business wisely and by right
   methods.

Source : WordNet®

businesslike
     adj 1: exhibiting methodical and systematic characteristics that
            would be useful in business
     2: not distracted by anything unrelated to the goal [syn: {earnest}]