petit bourgeois
adjective mainly disapproving uk also petty bourgeois UK ​ /ˌpet.i ˈbɔː.ʒwɑː/ US ​ /pəˌtiː bʊrˈʒwɑː/
​belonging to the lower middle social class, or having the characteristics that are considered typical of this class, such as thinking money and possessions are more important than other things, and not trusting new or different ideas:
petit bourgeois prejudices