certain /sûrˈtn/

1. Sure, confident
2. Not to be doubted, indisputable
3. Resolved
4. Fixed, decided, determined
5. Reliable, dependable
6. Regular
7. Inevitable
8. Named or specified but not known
9. Some (indeterminate number or quantity of)

cerˈtainly adverb

1. Without doubt, undoubtedly
2. In a resolved, fixed, etc manner

Yes, of course

cerˈtainty noun

1. Something certain (also in short form cert)
2. The state of being sure

cerˈtitude noun

(a) certainty

a certain person

A person known but not specifically named, implying some degree of contempt

a lady of a certain age

A woman who is no longer young

for certain

Assuredly, certainly

in a certain condition (euphemistic)

Pregnant

make certain see under make¹

moral certainty see under moral

• blare
• blared
• blares
• blaring
• blarney
• blarneyed
• blarneying
• blarney-land
• bookbindery
• bookbinding
• bookbindings
• book-canvasser
• book-canvassers
• bookcase
• bookcases
• book club
• book clubs
• book-debt
• book-debts
• booked
• booked-out
• booked-up
• bookend
• bookended
• bookending