| forgetful(adjective, remember) |
| heedless(adjective, careless, vague, sloppy, inattentive) |
| idle(dull, careless, sluggish, lazy, inactive) |
| inactive(dull, idle, sluggish, lazy, lethargic) |
| inattentive(adjective, dull, careless, indifferent, idle) |
| indifferent(dull, idle, sluggish, inactive, lethargic) |
| indolent(dull, idle, sluggish, lazy, inactive) |
| inert(dull, idle, sluggish, lazy, inactive) |
| lackadaisical(dull, idle, sluggish, lazy, inactive) |
| laggard(dull, careless, idle, sluggish, inactive) |
| lagging(dull, careless, idle, sluggish, inactive) |
| languid(dull, idle, sluggish, inactive, lethargic) |
| languorous(dull, idle, sluggish, inactive, lethargic) |
| lax(adjective, careless, vague, sloppy, slack) |
| lazy(adjective, idle, sluggish, inactive, lethargic) |
| lethargic(dull, idle, sluggish, lazy, inactive) |
| lifeless(dull, careless, idle, sluggish, inactive) |
| like an absent-minded professor(expression, adjective, idiom, careless, sloppy) |
| loafing(dull, careless, idle, sluggish, inactive) |
| looking out window(expression, adjective, idiom, careless, sloppy) |