এটি ছিল এক হিতাহিত জ্ঞানশূন্য পরিকল্পনা যা কখনোই সফল হতে পারত না।
COLLOCATIONS
demented laughter, demented behavior, demented person, demented scheme
WORD FORMSAdverb: dementedly | Noun: dementednessUSAGE NOTES
Often used to describe someone whose behavior is erratic or dangerously irrational, or someone suffering from a medical condition like dementia.