do not disturb
Used to indicate that somebody does not wish to be disturbed, e.g. a sign on a hotel room door, or a "busy" mode of an instant messenger.
disturb
UK /dɪˈstɜːb/ US /dɪˈstɜːb/
verb 3noun 1
Definitions
verb
1
to confuse a quiet, constant state or a calm, continuous flow, in particular: thoughts, actions or liquids.
The noisy ventilation disturbed me during the exam.
The performance was disturbed twice by a ringing mobile phone.
2
to divert, redirect, or alter by disturbing.
A mudslide disturbed the course of the river.
The trauma disturbed his mind.
3
to have a negative emotional impact; to cause emotional distress or confusion.
noun
1
disturbance
Instant without disturb they took alarm
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