heart of hearts
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Deep down, in one's innermost thoughts or feelings
Literally: center of one's heart
Where it’s used:
Used
Widespread English
Examples
In my heart of hearts, I knew I made the right decision
AI-drafted example auto-approved by rule (illustrative, not a corpus attestation)
Sources & notes
Listed in Wiktionary’s “English idioms” category (retrieved 2026-07-29); definition pending editorial review. Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-07-31; pending editor spot-check.
Equivalents & related
Common questions
What does “heart of hearts” mean?
Deep down, in one's innermost thoughts or feelings Literally: center of one's heart
Is “heart of hearts” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.
What is the closest equivalent?
“nội tâm” (Tiếng Việt) — near equivalent.