adj. 25B6; adjective
ingrained attitudes : ENTRENCHED, established, deep-rooted, deep-seated, fixed, firm, unshakeable, ineradicable; inveterate, dyed-in-the-wool, abiding, enduring, stubborn.
ingrained dirt : GROUND-IN, fixed, implanted, embedded; permanent, indelible, ineradicable, inexpungible.
transient, superficial.