| accidentally(adverb, short, sudden, suddenly, unexpectedly) |
| any old way(expression, idiom, careless, bold, thoughtless) |
| asleep |
| bold(adjective, careless, thoughtless, wary, heedless) |
| brash(adjective, careless, bold, thoughtless, impulsive) |
| by accident(expression, adverb, short, sudden, suddenly) |
| by mistake(expression, adverb, short, sudden, suddenly) |
| by surprise(expression, adverb, short, sudden, suddenly) |
| careless(adjective, bold, thoughtless, impulsive, inappropriate) |
| carelessly(adverb, short, sudden, suddenly, unexpectedly) |
| caught napping(expression, adjective, careless, bold, thoughtless) |
| culpably negligent |
| derelict |
| devil-may-care(adjective, careless, bold, thoughtless, wary) |
| fast-and-loose(adjective, careless, bold, thoughtless, impulsive) |
| flat-footed(adjective, adverb, inattentive, negligent, unprepared) |
| foot-in-mouth(adjective, careless, bold, thoughtless, impulsive) |
| goofing off |
| hasty(adjective, careless, bold, thoughtless, impulsive) |
| heedless(adjective, careless, bold, thoughtless, impulsive) |