ingrained
Word family adjectiveingrainedverbingrainnouningrainer
in·grained /ɪnˈɡreɪnd/ adjectiveadj 1 CHANGE/MAKE something DIFFERENTingrained attitudes or behaviour are firmly established and therefore difficult to change 〔态度或行为〕根深蒂固的,难以改变的ingrained in The idea of doing our duty is deeply ingrained in most people. 恪尽职守这一信念在大多数人的心里根深蒂固。
2. DDIRTYingrained dirt is under the surface of something and very difficult to remove 〔污物〕嵌入而难以清除的