Etymology

certainly

C3E1R1T1A1I1N1L1Y4

Today it means: In a way which is certain; with certainty. Full definition →

Middle English certeynly
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Middle English · inherited fromcerteynly
  2. English todaycertainly

From Middle English certeynly; equivalent to certain + -ly.

Etymology from Wiktionary, CC BY-SA 4.0.