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.
, a demand is futile if. particularized allegations create either a âreasonable doubtâ that âthe directors are disinterested and. independent,â or a âreasonable doubtâ that âthe challenged transaction was otherwise the product of a. valid exercise of business judgment.â.