to stare blankly; to be stunned; to be lost in thought

stupefied; stunned

stupid; dull; (medicine) dementia

(idiom) dumbstruck; stupefied; stunned

senile dementia; Alzheimer's disease

to gape at; to stare blankly; to stare in rapture; to stare in awe

(manufacturing) poka-yoke; mistake-proofing

(loanword from Japanese "tennen boke") space cadet; muddleheaded

lit. eye startled, mouth struck dumb (idiom); stunned; stupefied

stunned; dumbstruck

(coll.) Alzheimer's disease