diffident

1. ADJ Someone who is diffident is rather shy and does not enjoy talking about themselves or being noticed by other people. 羞怯的

John was as bouncy and ebullient as Helen was diffident and reserved. 约翰活泼、热情；而海伦却羞怯、矜持。

2. diffidenceN-UNCOUNT 羞怯

He tapped on the door, opened it, and entered with a certain diffidence. 他敲了敲门，打开了门，带着一些羞怯走了进去。