say it: in-FIR-ee-ur
inferior is an adjective and noun meaning "of or characteristic of low rank or importance". It is pronounced /ˌɪnˈfɪɹiɚ/ — in-FIR-ee-ur. It carries 8 recorded senses.
having an orbit between the sun and the Earth's orbit
“Mercury and Venus are inferior planets”
astronomy
falling short of some prescribed norm
“substandard housing”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for inferior come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.