cer·ti·tude 
(sûrtĭ-td′, -tyd′)
(sûrtĭ-td′, -tyd′)n.
1. The state of being certain or convinced of something; complete assurance; confidence: Who can say with certitude how strong the economy will be next year?
2. Something that is assured or believed to be true: "serene certitudes instilled in me by my family and teachers" (Garry Wills).
[Middle English, from Late Latin certitūdō, from Latin certus, certain; see CERTAIN.]
- preparator
- preparatorily
- preparatory
- preparatory school
- prepare
- preparedly
- preparedness
- preparer
- prepay
- prepayment
- prepend
- prepense
- prepensely
- preponderance
- preponderancy
- preponderant
- preponderantly
- preponderate
- preponderately
- preponderation
- preposition
- preposition
- pre-position
- prepositional
- prepositionally