IPA: /ˈkɒmənpleɪs/
KK: /ˈkɑːmənˌpleɪs/
Something that is ordinary and not special or unique.
The design of the building was quite commonplace, lacking any distinctive features.
Comparative: more commonplace
Superlative: most commonplace
A remark or idea that is ordinary and not original; something that is commonly accepted or repeated.
His speech was filled with commonplaces that everyone had heard before.
Commonplace → It is formed from "common" (from Old French *comun*, meaning shared by all) and "place" (from Latin *locus*, meaning location or position). The word "commonplace" refers to something that is found everywhere or is ordinary and unremarkable, as it is shared by many.
Think of something that is 'shared by all' ('common') in a certain 'location' ('place') — that's why commonplace means something ordinary or usual.