Skip to main content
We're in Beta! Found a bug? Let us know using the feedback button at the bottom right.
US
/ʌnˈsɜːrtənli/
UK
/ʌnˈsɜːtənli/
See IPA manual
From uncertain + -ly. Certain comes from Old French certain, from Vulgar Latin *certanus, from Latin certus ('sure, fixed, determined'), past participle of cernere ('to distinguish, decide').
View etymology graph ->
General
Open this dialog?
Close dialogEsc
Open search⌘K
Press ? anytime to toggle this dialog