# by heart

> English word · Prep_phrase · IPA /baɪ ˈhɑːt/

## Definitions
1. From unaided memory and in full detail.

## Etymology
From Middle English by herte. Compare French par cœur (literally “by heart”), of which the English may be a calque.

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