whatchamacallit
17 synonyms for whatchamacallit, grouped by meaning and by how common each one is.
Noun — An informal word for an object whose name you can't remember or don't know.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
How to use whatchamacallit
The word patterns that sound natural to a native speaker.
Very informal and spoken — never used in formal writing.
Etymology
A run-together, shortened form of "what you may call it," first recorded in the early 1920s in the United States.
Full origin of whatchamacallit →