comprehend
/kɒmpɹɪˈhɛnd/verb
To fully understand the meaning or nature of something.
Example sentences
- “It took me a while to comprehend how serious the problem was.”
- “Small children can't comprehend how big the universe really is.”
Most natural in negatives: 'failed to comprehend', 'cannot comprehend'. In positive statements, plain 'understand' reads better.