Assurance, full trust; belief in the powers, trustworthiness, or reliability of a person or thing.
The definition of the word "Sheepish" is the showing of embarrassment or shame, as of from lack of self confidence. You can learn more about the word "Sheepish" online at the Merriam-Webster website.
Believable is most likely to be the definition of credible.
this might not help, but try looking up the definition of each word :D
Confidence.
self confidence
Confident in yourself...
A word for full of confidence is, confident.
confidence
The word confidence is a noun, a singular, common, abstract noun; a word for a belief or a feeling.
The word "self-confidence" is hyphenated.
There is no word for "Jewish confidence". But if you are asking for the Hebrew word for confidence, it is bitakhon (ביטחון). If you are asking for the Yiddish word for confidence, it depends on the dialect, but one way is tzufarzicht (צופֿרזיכט).
confidence = confiance