Whatchamacallit
"Whatchamacallit" in Japanese
何々
naninani
(any object the actual name of which the speaker does not know or cannot remember)
何とか
nantoka
(any object the actual name of which the speaker does not know or cannot remember)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.