From Longman Dictionary of Contemporary Englishdeep-rootedˌdeep-ˈrooted (also deeply rooted) adjective CHANGE/BECOME DIFFERENTa deep-rooted habit, idea, belief etc is so strong in a person or society that it is very difficult to change or destroy it → deep-seated a deep-rooted suspicion of lawyers
Examples from the Corpus
deep-rooted• None could halt or defeat such deep-rooted determination to learn.• These expectations-and a lot of the ensuing disappointments-were heightened and exacerbated by my own deep-rooted impatience.• No doubt that was one reason for the deep-rooted Labour hostility to devolution, and there were other reasons.• Prior to the Revolution there was scant institutional evidence of deep-rooted nationalist sentiment.• It acknowledged the deep-rooted nature of heterosexism and made a commitment to fight that.• They may take a week or so to work, but can kill most deep-rooted perennial weeds without being persistent.• The idea that acts of love are inferior to principled acts is a deep-rooted philosophical tradition.• Collins has had to deal with deep-rooted prejudice against him.• Leaving corridors of deep-rooted woodland can prevent salinity. 