See list of percussion instruments by type for some shorter, more focused lists. Use the sorting arrows on the common usage column to group instruments as pitched, unpitched or both. Use the sorting arrows on the Classification column to group instruments according to their HornbostelâSachs classification. 1 Percussion instruments.
uncertainty, doubt, dubiety, skepticism, suspicion, mistrust mean lack of sureness about someone or something. uncertainty may range from a falling short of certainty to an almost complete lack of conviction or knowledge especially about an outcome or result.
The definition of confidence is trust, faith, self-assurance or something told in secret. 1  An example of confidence is the belief that the sun will rise tomorrow morning. 2  An example of confidence is a student feeling positive and prepared for a test they are about to take.