hide·bound 
/ˈhaɪdˌbaʊnd/ adjective
/ˈhaɪdˌbaʊnd/ adjective [more hidebound; most hidebound] disapproving : not willing to accept new or different ideas
▪ a hidebound conservative ▪ hidebound traditions [=old traditions that are out-of-date and should be changed]
▪ a hidebound conservative ▪ hidebound traditions [=old traditions that are out-of-date and should be changed]
