Zhè jiàn shì de zhēnxiàng, kǒngpà zhǐyǒu tā yí gè rén xiǎode.
The truth of this matter is probably known only to him.
Tips
register
Colloquial and somewhat dialectal (common in southwestern Mandarin, Sichuanese, and parts of southern China). In standard/formal Mandarin use 知道.
usage
晓得 is a colloquial/dialectal synonym for 知道. It's very common in southern Chinese dialects (Sichuan, Hunan, etc.) and in Taiwanese Mandarin. In standard Mandarin, 知道 is preferred.
