The phrase "unreasonable delay" refers to a situation where something is taking longer than it should or is being unnecessarily delayed. It indicates a delay that is not reasonable or justified. Full definition
If you are required to notify more than 1,000 persons of a security breach at one time, you are also required to notify consumer reporting agencies without unreasonable delay. (dimuro.com)
We also provide guidance on whether consent can be reasonably withheld and how to protect against claims for unreasonable delay. (sherrards.com)
Or you must prove some action or assertion was «taken primarily for the purpose of unreasonable delay» and caused damages to the moving party. (carltonfields.com)