yuán​xíng​bì​lù

to show one's true colors

Senses

原形毕露/ 原形畢露 yuán​xíng​bì​lù to show one's true colors

the original identity is fully revealed; to unmask and expose the whole truth or true nature of something or someone, especially after a disguise has been stripped away

References

antonym 原形毕露/原形畢露 藏头露尾/藏頭露尾