Pronunciation: [ˌɒn ˈɛd͡ʒ] (IPA) 
The phrase "on edge" refers to someone who is tense or anxious. Its spelling follows the basic rules of English orthography, with "on" pronounced as /ɒn/ and "edge" pronounced as /ɛdʒ/. The "d" in "edge" is followed by a soft "g" sound, which is represented by the letter "g" in the word's spelling. The two words are typically pronounced as one stress group, with the stress falling on the first syllable of "edge."
"On edge" is an idiomatic expression used to describe a state of nervousness, stress, or extreme agitation. When someone is on edge, they are in a state of high alertness or anxious anticipation. This phrase often signifies a feeling of unease or tension, as if one is balancing precariously on a figurative edge.
The term can be used in various contexts, referring to a person's psychological or emotional state. It might be experienced by someone awaiting important news, preparing for a challenging event, or feeling threatened or insecure. For instance, if a person is waiting for the results of a medical test, they might be on edge as they are worried about the outcome.
"On edge" can also describe tense or unsettling atmospheres or situations. This might be applicable when there is a heightened sense of danger or if people are behaving erratically or aggressively. It implies an environment where individuals are easily irritated, frustrated, or ready to react impulsively due to the perceived stressors.
Overall, "on edge" conveys a sense of vulnerability and emotional instability, where one's emotions or nerves might be teetering on the brink. The phrase serves to capture the heightened sensitivity and alertness that individuals may experience in situations that evoke fear, uncertainty, or pressure.
The phrase "on edge" has its origins in the 17th century, deriving from the Old English word "edge" meaning "sharp side of a blade". In the literal sense, being on the edge referred to being positioned on a narrow blade, which conveys a feeling of instability or precariousness. Over time, this phrase gradually evolved, and by the 19th century, it began to be used metaphorically to express a state of nervousness, anxiety, or tension, reflecting the idea of being perched on a figurative edge.
