https://www.heart.org/en/news/2019/02/25/the-heart-isnt-particularly-vulnerable-to-cancer-and-heres-why

Meaning: To be very honest; to be speaking truthfully.

Example:

I think you’re the best mom ever. I mean that from the bottom of my heart.

I’m speaking from the bottom of my heart when I say I’m glad to be here today.

You can tell he’s speaking from the bottom of his heart – it looks like he;s going to cry.

Pop Quiz:

What’s the opposite of from the bottom of my heart?

A.  Sincerely

B.  Insincerely

C.  Deeply

To see the correct answer, click on “Continue reading”:

The correct answer is B. If you say something from the bottom of your heart, you’re speaking honestly, which is the same as sincerely – so insincerely is its opposite!