This is the 1864th most frequent Japanese word.
正体
"True identity" or "true nature."
正体 here signifies 'true identity', reflecting the essence or reality of someone or something often hidden or unknown.
彼の正体がついに暴かれた。
His true identity was finally revealed.
正体 in this context refers to the actual identity or nature of something previously misunderstood or misidentified.
その幽霊の正体は、モノの影だった。
The ghost turned out to be just the shadow of an object.
正体 in this sentence represents the underlying truth or reality of a mysterious topic or phenomenon.