The act of disturbing, being disturbed. / Something that disturbs. / A noisy commotion that causes a hubbub or interruption. / An interruption of that which is normal or regular.

(obsolete) disturbance

Causing distress or worry; upsetting or unsettling.

present participle of disturb

Third-person singular simple present indicative form of disturb

plural of disturbance

Someone or something that disturbs; a disrupter.

plural of disturber

to stop someone from working or sleeping

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.