Open English Wordnet
Nouns
(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)upset, derangement, overthrowthe act of disturbing the mind or body“his carelessness could have caused an ecological upset”, “she was unprepared for this sudden overthrow of their normal way of living”
Verbs
Adjectives
(s)disquieted, distressed, disturbed, upset, worriedafflicted with or marked by anxious uneasiness or trouble or grief“too upset to say anything”, “spent many disquieted moments”, “distressed about her son's leaving home”, “lapsed into disturbed sleep”, “worried parents”, “a worried frown”, “one last worried check of the sleeping children”
(s)broken, confused, disordered, upsetthrown into a state of disarray or confusion“troops fleeing in broken ranks”, “a confused mass of papers on the desk”, “the small disordered room”, “with everything so upset”
(s)overturned, upset, upturnedhaving been turned so that the bottom is no longer the bottom“an overturned car”, “the upset pitcher of milk”, “sat on an upturned bucket”