Upsetting
Part of speech: verb
Definition: To make (a person) angry, distressed, or unhappy.
Part of speech: adjective
Definition: That causes or cause upset.
Part of speech: noun
Definition: The action of the verb to upset.
Disconcerting
Part of speech: adjective
Definition: Tending to cause discomfort, uneasiness or alarm; unsettling; troubling; upsetting.