Showing symptoms of mental illness, severe psychosis, or neurosis. / Extremely alarmed; shocked.

simple past tense and past participle of disturb

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.