1 very great; felt or experienced very strongly:
profound changes in the earth's climate * My father's death had a profound effect on us all. * The news came as a profound shock. * The report has profound implications for schools. * Her sense of disappointment was profound.
2 showing great knowledge or understanding:
profound thought / understanding / insights * a profound book / drama
3 needing a lot of study or thought:
profound questions about life and death
4 (medical) very serious; complete:
profound disability
