What does thingumabob mean?
Thingumabob is an informal noun for a person or thing that the speaker cannot or does not want to name precisely. Its deliberately vague, playful sound makes it useful when naming something would be inconvenient, when the speaker is uncertain what an unfamiliar object is, or when they want to characterize someone dismissively without identifying them. “The thingumabob on the table” resembles expressions such as “the thingamajig” and “the whatchamacallit,” but it often has a more eccentric and good-humoured tone. It can also be addressed to a person, as in “You thingumabob,” in which case it may convey irritation, surprise, or affection depending on context. The word is chiefly associated with informal British English and is rarely appropriate in formal writing. Its appeal lies in combining grammatical flexibility with comic evasiveness: it names a referent while deliberately declining to say exactly what that referent is.
nounAn indefinite noun used informally for a person or thing whose name the speaker does not know or does not wish to specify.
- An unnamed or unspecified thing.
- An unnamed or unspecified person, sometimes used dismissively.
"The thingumabob on the desk is blocking my notes."
"The thingumabob on the desk is blocking my notes."
"You thingumabob, did you move my car?"
The regular plural is rarely needed because the word is normally used for a single unidentified person or thing.
"The shelves were crowded with strange little thingumabobs."
Thingumabob is a verbal shrug: it lets you point to something—or someone you are too bemused to identify—without committing to a name.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does thingumabob come from?
Thingumabob is an English word formed within a family of playful placeholder expressions built around “thing,” including thingum, thingummy, and thingamajig. Its precise historical origin is not securely documented. The addition of “bob” gives the word its characteristically whimsical sound, while its function is shared with the other members of this informal naming family.
How thingumabob is actually used
Very informal and whimsical. It is often humorous, but it can sound dismissive or insulting when directed at a person. It is more characteristic of casual British speech and conversation than of formal writing.