Translation of "Bashful" in Japanese

The boy is bashful and doesn't talk much.

少年は内気であまりしゃべらない。

She is not so much unsociable as bashful.

彼女は人付き合いが悪いと言うより内気なのです。

Since he's in show business he often goofs around in a showy way, but once in a while he has these bashful mannerisms that are really cute.

彼は芸人だからいつも馬鹿な事やっているけど、たまに見せる恥ずかしそうにする仕草がかわいいのよね。