Tip of the tongue
Meaning
Almost able to recall something but not quite.
Usage
Used when struggling to remember names or facts.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Describes the sensation that the answer is just beyond full recall.
Psychologists adopted the term in the 20th century to describe a memory phenomenon.