This is the 12288th most frequent Russian word.
истинное
"Истинное" means "true" or "genuine" in English.
In this sentence, 'истинное' means 'true' and is used as an attributive adjective describing 'happiness', indicating its authenticity or genuineness.
Истинное счастье не зависит от внешних обстоятельств.
True happiness does not depend on external circumstances.
Here, 'истинное' is used metaphorically to imply 'real' or 'genuine', referring to one's core or authentic self.
Его истинное лицо открылось нам после долгого разговора.
His true nature revealed itself to us after a long conversation.
The word 'истинное' here implies the 'correct' or 'accurate' answer, emphasizing the exactness or precision of the solution.