We don't have synonyms for dingus yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are dinkus, dinges and dings.
°Something whose name is either unknown or forgotten.
"1979: 'Say, what's that dingus you Britishers wear when you're playing cricket?' -- Kyril Bonfiglioli, After You with the Pistol (Penguin 2001, p. 241)"
°A fool or incompetent person.
"I just lost my keys again. Now I feel like a dingus."
°Something whose name is either unknown or forgotten.
"1979: 'Say, what's that dingus you Britishers wear when you're playing cricket?' -- Kyril Bonfiglioli, After You with the Pistol (Penguin 2001, p. 241)"
°A fool or incompetent person.
"I just lost my keys again. Now I feel like a dingus."