unapproachable
un-ap-proach-a-ble
adjective
Difficult or impossible to get close to, physically or socially, often due to manner.
"Her stern expression made her seem unapproachable."
Thesaurus
Synonyms: out of reach, unaccessible, inaccessible, unreached, unreachable, standoffish, offish
Antonyms: approachable