# thinking cap

> English word · Noun · IPA /ˈθɪŋkɪŋ ˌkæp/

## Definitions
1. A metaphorical state of focused thinking or concentration, invoked to encourage problem-solving.

## Etymology
Probably by analogy with considering cap, which is attested from the early 17th century.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/thinking-cap