| napping(adjective, adverb) |
| off-guard(adjective, adverb, indifferent, apathetic, distracted) |
| incautious(adjective, careless, careful, rash, reckless) |
| off his guard |
| unprepared(adjective, adverb, inattentive, negligent, suddenly) |
| unready(adjective, adverb, short, inattentive, negligent) |
| unsuspecting(adjective, friendly, inattentive, unprepared, gullible) |
| neglectful(adjective, careless, bold, thoughtless, impulsive) |
| negligent(adjective, adverb, careless, bold, thoughtless) |
| off her guard |
| off one's guard |
| unalert(adjective, adverb, careless, bold, thoughtless) |
| unawares(adverb, suddenly, unexpectedly, ignorantly, unwatchful) |
| unexpectedly(adverb, short, sudden, suddenly, unawares) |
| unguarded(adjective, adverb, careless, bold, thoughtless) |
| unvigilant(adjective, careless, bold, thoughtless, impulsive) |
| unwary(adjective, careless, innocent, rash, reckless) |
| unwatchful(adjective, adverb, careless, bold, thoughtless) |
| aback(adverb, short, sudden, suddenly, unexpectedly) |
| abruptly(adverb, short, sudden, suddenly, unexpectedly) |