Be off (one's) guard
Übersetzung von "be off (one's) guard" ins Russisch
be off (one's) guard
быть не начеку
He was caught off his guard by the sudden question.
Он был застигнут врасплох внезапным вопросом.
Definitionen
To be unprepared, inattentive, or not alert to potential danger, threats, or surprises; to not be paying close attention or to have one's defenses lowered.