Princeton's WordNet

1. napping, off-guard(a), off guard(p), off one's guard(p), off his guard, off her guard, off your guard(adj)

   not prepared or vigilant

   "the blow caught him napping"; "caught in an off-guard moment"; "found him off his guard"

Wiktionary

1. off guard(Adjective)

   Not vigilant; unprepared; inattentive.

• nie op jou hoede nieAfrikaans
• ليس في الحِراسَهArabic
• хващам неподготвенBulgarian
• desprevenidoPortuguese (BR)
• nepřipravenýCzech
• unachtsamGerman
• tage på sengenDanish
• απροετοίμαστοςGreek
• desprevenidoSpanish
• (kaitseks) ettevalmistamataEstonian
• غافل؛ غیر آمادهFarsi
• yllättäenFinnish
• au dépourvuFrench
• לא עוֹמֶד עַל הַמִשמָרHebrew
• गैर सतर्कHindi
• nespremanCroatian
• elővigyázatlanHungarian
• lengahIndonesian
• óviðbúinnIcelandic
• alla sprovvistaItalian
• 油断してJapanese
• 경계가 태만한Korean
• praradęs budrumą, nejučiom, netikėtaiLithuanian
• nesagatavots; neaizsargātsLatvian
• tidak bersediaMalay
• niet op zijn hoedeDutch
• uoppmerksom, uforberedtNorwegian
• nie przygotowanyPolish
• غافل؛ غیر آمادهPersian
• ناچمتو، ناتيارPashto
• desprevenidoPortuguese
• nepre­gătitRomanian
• застигнутый врасплохRussian
• nepripravenýSlovak
• nepripravljenSlovenian
• nepripremljenSerbian
• inte på sin vakt, med överrumplingSwedish
• โดยไม่ระวังตัวThai
• hazırlıksızTurkish
• 冷不防地Chinese (Trad.)
• неготовийUkrainian
• غافل ہوناUrdu
• mất cảnh giácVietnamese
• 不提防Chinese (Simp.)