thingummy

plural thingummies

1. Synonym of thingy: something one cannot remember the name of, or is unable to or does not care to specify precisely.

   Synonyms: thingy

2. Synonym of whatshisname: someone one cannot remember the name of.

   1 more example

   Once, in his first term, Cartwright had been bold enough to ask him why he was so clever, […] ‘It’s memory, Cartwright, old dear. Memory, the mother of the Muses . . . at least that’s what thingummy said.’ ‘Who?’ ‘You know, what’s his name, Greek poet chap. Wrote the Theogony . . . what was he called? Begins with an “H”.’ ‘Homer?’ ‘No, dear. Not Homer, the other one. No, it’s gone. Anyway. Memory, that’s the key.’

   1991 September, Stephen Fry, chapter 1, in The Liar, London: Heinemann, →ISBN, section I, pages 7–8

   Synonyms: whatshisname