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

simple past tense and past participle of disturb

(obsolete) disturbance

(transitive) to confuse a quiet, constant state or a calm, continuous flow, in particular: thoughts, actions or liquids. / (transitive) to divert, redirect, or alter by disturbing.

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.

Someone or something that disturbs; a disrupter.

plural of disturber

Causing distress or worry; upsetting or unsettling.

present participle of disturb

Third-person singular simple present indicative form of disturb