doctrine word on purple

doctrine word purple definition legal political religious incorporation stare decisis precedent sovereign immunity double effect original sin laches fair use res judicata separate personality consideration promissory estoppel caveat emptor judicial review vicarious liability constructive notice implied warranty equitable unconscionability necessaries comparative negligence anticipatory repudiation substantial performance consent ultra vires contra proferentem separation powers abandonment election frustration purpose apparent authority subrogation jeopardy informed nuisance avoidable consequences mens rea statute limitations possession intervening cause perpetuities official proximate clean hands