Antonyms of adj businesslike

2 senses of businesslike

Sense 1
businesslike -- (exhibiting methodical and systematic characteristics that would be useful in business)

INDIRECT (VIA efficient) -> inefficient -- (not producing desired results; wasteful; "an inefficient campaign against drugs"; "outdated and inefficient design and methods")

Sense 2
businesslike, earnest -- (not distracted by anything unrelated to the goal)

INDIRECT (VIA purposeful) -> purposeless -- (not evidencing any purpose or goal)

Similarity of adj businesslike

2 senses of businesslike

Sense 1
businesslike -- (exhibiting methodical and systematic characteristics that would be useful in business)
       => efficient (vs. inefficient) -- (being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas")

Sense 2
businesslike, earnest -- (not distracted by anything unrelated to the goal)
       => purposeful (vs. purposeless) -- (serving as or indicating the existence of a purpose or goal)