Vigilant or on one's guard against danger or difficulty.
"The security team remained aware of every suspicious movement near the perimeter fence."
In plain English: Aware means you know something is happening around you and are paying attention to it.
"She was not aware that she had left her keys in the car."
Usage: Use "aware" to describe the state of being conscious or having knowledge of something, such as facts or surroundings. It does not mean being vigilant or on guard; for that meaning, use "alert."
Example Sentences
"She was not aware that she had left her keys in the car."adj
"She was aware of the danger lurking in the shadows."adj
"He became aware that his phone had been left on the table."adj
"They were not aware until now that their friends had moved away."adj
The word "aware" comes from the Old English ġewær, which originally meant being cautious or attentive. It traveled into modern English through Middle English while retaining its core sense of paying close attention to something.