understand
✓ Reviewed by Allen · Oct 2026 · Origin: probable · How we check entries
Meaning
To know the meaning of something, or the reason for or cause of something.
To know how someone feels or why they behave in a particular way.
To have knowledge or information about something, often because you have been told.
Structure
Usage
I don't understand the instructions for this new software.
She understands the challenges of running a small business.
Do you understand why he made that decision?
Etymology
Origin: ProbableThe main line is well supported, but some details are uncertain.
Understand comes from Old English understandan, under + standan, "stand". Here under probably meant "among, between", as in German unter, so the idea may be "to stand among" or "be close to" something and so grasp it. Why this phrase came to mean "comprehend" is not certain.
Analysis
- under (Old English): A preposition/adverb meaning "beneath, among, between, in the presence of." In this compound, it carries an intensive or figurative sense of being close to or in the midst of. - stand (Old English): A verb meaning "to stand, remain, be valid, exist." Here, it functions as the core verb meaning "to be positioned."