■ adjective ( ~er , ~est )
1》 very great or intense: ~ social changes.
↘(of a disease or disability) severe.
2》 showing great knowledge or insight.
↘demanding deep study or thought.
3》 archaic very deep.
Derivatives
~ly adverb
~ness noun
Origin
ME: from OFr. profund , from L. profundus 'deep', from L. pro 'before' + fundus 'bottom'.