Antonyms of adj industrious

2 senses of industrious

Sense 1
hardworking, industrious, tireless, untiring -- (characterized by hard work and perseverance)

INDIRECT (VIA diligent) -> negligent -- (characterized by neglect and undue lack of concern; "negligent parents"; "negligent of detail"; "negligent in his correspondence")

Sense 2
energetic, gumptious, industrious, up-and-coming -- (working hard to promote an enterprise)

INDIRECT (VIA enterprising) -> unenterprising, nonenterprising -- (lacking in enterprise; not bold or venturesome)

Similarity of adj industrious

2 senses of industrious

Sense 1
hardworking, industrious, tireless, untiring -- (characterized by hard work and perseverance)
       => diligent (vs. negligent) -- (characterized by care and perseverance in carrying out tasks; "a diligent detective investigates all clues"; "a diligent search of the files")

Sense 2
energetic, gumptious, industrious, up-and-coming -- (working hard to promote an enterprise)
       => enterprising (vs. unenterprising) -- (marked by imagination, initiative, and readiness to undertake new projects; "an enterprising foreign policy"; "an enterprising young man likely to go far")