Pronunciation (UK) IPA (key): /ˌsjuː.pə(r)ˈsɪ.li.əs/ (US) IPA (key): /ˌs(j)u.pɚˈsɪ.li.əs/ Audio (US)(file) Adjective Positive supercilious Comparative more supercilious Superlative most supercilious A supercilious person is someone who is arrogant and full of pride. Synonyms: arrogant and haughtyWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads