Meaning of “inferior” - Learner’s Dictionary

inferior

adjective uk us /ɪnˈfɪəriər/

not good, or not as good as someone or something else:

I've never felt inferior to anyone.
They're selling inferior products at inflated prices.
inferiority uk us /ɪnˌfɪəriˈɒrəti/ noun [ U ]

the fact of not being as good as another thing, or the feeling that you are not as good as other people

(Definition of “inferior adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)