knowledge or clear insight about how something works or what something means
Maria showed a deep understanding of the math problem during class.
Reading books about other cultures can widen our understanding of the world.
✦ From the verb "understand" + the suffix "-ing", first recorded in Old English as a noun meaning "comprehension".
an informal agreement or arrangement between people or groups
We have an understanding that I will water her plants while she is away.
The two companies reached an understanding to share technology.
✦ Developed from the broader sense of "comprehension" to mean "agreement" in the late 17th century, emphasizing shared knowledge between parties.
sympathetic and willing to forgive or consider someone’s feelings
The understanding teacher gave the student extra time to finish the test.
Her friends were very understanding when she had to cancel the trip.
✦ Adjective use recorded from the early 1600s, shifting from the participial sense of "one who understands" to a quality of empathy.
to know what something means or what someone is saying
Do you understand the instructions on the packet?
Lena can understand French, but she feels shy about speaking it.
to know how someone feels and show sympathy
I understand how nervous you feel before the test.
Good friends understand each other in hard times.
to think or believe something is true because of what you have been told or have read
I understand that the meeting has been moved to Friday.
From what I understand, the movie was filmed in Spain.
fail to understand something correctly
I think you misunderstand what I'm trying to say.
He often misunderstands the teacher's instructions.
✦ Formed in the 16th century from the prefix 'mis-' meaning 'wrongly' or 'badly' combined with the verb 'understand', entering English via Middle English.
a failure to understand or interpret something correctly
The argument between the brothers was caused by a simple misunderstanding.
She cleared up the misunderstanding with her best friend over the phone.
✦ Late 16th century: originally from the verb misunderstand, formed as mis- (meaning 'badly' or 'wrongly') + understanding.
