definition of
upset

[1] #1 upset v. disturb the balance or stability of; "The hostile talks upset the peaceful relations between the two countries". wn

[2] #2 upset v. [discompose, untune, disconcert, discomfit] cause to lose one's composure. wn

[3] #3 upset v. [disturb, trouble] move deeply; "This book upset me"; "A troubling thought". wn

[4] #4 upset n. [disturbance, perturbation] an unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me". wn

[5] #5 upset s. [disquieted, distressed, disturbed, worried] afflicted 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 wor. wn