disquiet

nouns

a feeling of mild anxiety about possible developments
anxiousness, disquiet
the trait of seeming ill at ease
disquiet, unease, uneasiness

verbs

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"
cark, disorder, disquiet, distract, perturb, trouble, unhinge