2. 真相。He tried to find out the truth
3. 實情。 In the town very few know the whole truth.
4. 真實。There is no truth in this story.
5. 真言。When wine is in truth is out. 酒後吐真言。
6. 真理。 He is on a perpetual search for truth.
說實話 tell the truth 他沒說實話。He didn't tell the truth.
說真話 speak the mind 他不會說真話。He won't speak the mind.
資料來源:京文出版社https://www.gainwind.com.tw/