Open English Wordnet
Nouns
(n)perturbation, disturbanceactivity that is a malfunction, intrusion, or interruption“the term ‘distress’ connotes some degree of perturbation and emotional upset”, “he looked around for the source of the disturbance”, “there was a disturbance of neural function”
(n)disturbance, perturbation, upsetan unhappy and worried mental state“there was too much anger and disturbance”, “she didn't realize the upset she caused me”
(n)disturbance, disruption, commotion, flutter, hurly burly, to-do, hoo-ha, hoo-hah, kerfufflea disorderly outburst or tumult“they were amazed by the furious disturbance they had caused”
(n)mental disorder, mental disturbance, disturbance, psychological disorder, folie(psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness
