/ ˈdiːpli; NAmE / adverb
1.
very; very much :
She is deeply religious.
They were deeply disturbed by the accident.
Opinion is deeply divided on this issue.
deeply rooted customs / ideas
deeply held beliefs / convictions / views (= that sb feels very strongly)
2.
used with some verbs to show that sth is done in a very complete way :
to breathe / sigh / exhale deeply (= using all of the air in your lungs)
sleep deeply (= in a way that makes it difficult for you to wake up)
to think deeply (= about all the aspects of sth)
3.
to a depth that is quite a long way from the surface of sth :
to drill deeply into the wood
➡ note at deep