By Heart (Adverb)
Meaning
By committing to memory; "she knew the poem by heart".
Examples
- After years of reciting it in church, she knew the Lord's Prayer by heart.
- He had memorized his lines by heart and was ready for the school play.
- She sang along to her favorite song by heart, every word perfect.
- The teacher asked the class to memorize the multiplication table by heart for the test.
- By the time he was seven, he had learned the entire alphabet by heart.