| slapdash(adjective, slow, careless, indifferent, thoughtless) |
| slipshod(adjective, slow, careless, indifferent, thoughtless) |
| sloppy(adjective, slow, careless, indifferent, thoughtless) |
| slovenly(adjective, careless, indifferent, unconcerned, sloppy) |
| thoughtless(adjective, slow, careless, indifferent, sloppy) |
| unheedful(adjective, careless, indifferent, unconcerned, sloppy) |
| unmindful(adjective, slow, careless, indifferent, thoughtless) |
| unthinking(adjective, careless, indifferent, unconcerned, sloppy) |
| asleep at the switch(expression, adjective, idiom, adverb, heedless) |
| by accident(expression, ignorantly, unwatchful) |
| by mistake(expression, ignorantly, unwatchful) |
| by surprise(expression, ignorantly, unwatchful) |
| careless(adjective, indifferent, sloppy, inattentive, negligent) |
| casual(adjective, careless, inattentive, slipshod, neglectful) |
| flat-footed(adverb, negligent, unprepared, ignorantly, unwatchful) |
| ignorantly |
| inadvertent(adjective, careless, indifferent, unconcerned, sloppy) |
| not on the job(expression, idiom, adverb, negligent, unprepared) |
| off-guard(adverb, ignorantly, unwatchful) |
| off guard(expression, adverb, ignorantly, unwatchful) |