dic ‧ ta ‧ to ‧ ri ‧ al /ˌdɪktəˈtɔːriəl◂/ BrE AmE adjective
1 . a dictatorial government or ruler has complete power over a country:
dictatorial regimes
2 . a dictatorial person tells other people what to do in an unreasonable way:
Professor Clement’s dictatorial attitude
—dictatorially adverb