profound

Universal Words adjective 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