[noun] a feeling of mild anxiety about possible developments Synonyms:anxiousness
[noun] the trait of seeming ill at ease Synonyms:unease, uneasiness
[verb] disturb in mind or make uneasy or cause to be worried or alarmed; "She was rather perturbed by the news that her father was seriously ill" Synonyms:perturb, unhinge, trouble, cark, distract, disorder
