The role of catharsis in one's mental health should not be undermined.
On Long Island, during Stuyvesant's rule, Dutch influence was gradually undermined by John Underhill.
He forgot that he had also limited all logical use of reason, and therefore of practical reason, to phenomena, and thereby undermined the rationality not only of knowledge, but also of faith.
His faith in a strong nationalistic policy was gradually undermined, and he finally became the foremost champion of particularism and the recognized leader of what is generally known as the "States Rights" or "Strict Construction" party.
Structural shortages, however, continually undermined this legitimacy.