Deepen
Drill
Drill verb - To make a hole or series of holes in.
Common collocations
| character | deepen character | drill character |
Cite this Source
Drill and Deepen. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deepen/drill
Deepen & Drill. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deepen/drill>.
Drill or Deepen. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deepen/drill.
Google Ngram Viewer shows how "deepen" and "drill" have occurred on timeline