Etymology

deepen

D2E1E1P3E1N1

Today it means: To make deep or deeper Full definition →

English deep ← Middle English dep ← Old English dēop
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Proto-Indo-European*dʰewbʰ-
  2. Proto-Germanic*deupaz
  3. Proto-West Germanic*deup
  4. Old Englishdēop
  5. Middle Englishdep
  6. Englishdeep
  7. English todaydeepen

From deep + -en.

Etymology from Wiktionary, CC BY-SA 4.0.