Latin

certus

‘certain, fixed’

Every word has its own definition in its root. These English words share one: Latin certus.

9 English words in this record descend from Latin certus, most familiar first.

• certain ← certeyn ← *certānus
• certainly ← certeynly ← certeyn ← certain ← *certānus
• certainty ← certeynte ← certeinte ← certeinete ← *certānitās
• ascertain ← acerteynen ← acertener
• certitude ← certitūdō
• certes
• certitudinal ← certitūdō
• certitudinous ← certitūdō
• decertation ← decertatio ← decertare ← certō

Etymograph / Latin certus