the feeling aroused by something strange and surprising
"The sight of a giant flower blooming in the middle of winter filled her with wonder."
Something that causes amazement or awe; a marvel.
"After traveling to Egypt, we finally saw the Great Pyramid in person and marveled at how it remains one of the Seven Wonders of the World today."
Any of the Wonders of the World.
In plain English: A feeling of amazement when you see something amazing or strange.
"The real wonder was how he fixed the car with just a wrench and some tape."
To be affected with surprise or admiration; to be struck with astonishment; to be amazed; to marvel; often followed by at.
"When I first saw the massive waterfall, I stood there in total wonder at its sheer power."
In plain English: To wonder means to feel curious about something and ask yourself questions when you don't know the answer.
"I wonder what time the train arrives."
Usage: Use wonder as an intransitive verb meaning to feel amazement, typically followed directly by the preposition "at" (e.g., I am wondering at his skill). Do not confuse this emotional reaction with the act of asking questions or seeking information about something unknown.
The word "wonder" comes from Old English wundor, meaning a miracle or marvel. It traveled into modern English with this same sense of awe-inspiring amazement.