straight-faced

Adjective

Having a straight face, not revealing excessive emotion, especially amusement. / Bold, blatant, bald-faced.

Japanese Meaning

感情をあまり表に出さず、無表情でいること。 / 遠慮や恥じらいがなく、はっきりとした、時には図々しい様子。

She delivered the punchline straight-faced, which made the joke even funnier to those who noticed.

彼女は無表情でオチを言い、それに気づいた人にはそのジョークがさらに面白く感じられた。

Sense（1）

Having a straight face, not revealing excessive emotion, especially amusement.

Sense（2）

Bold, blatant, bald-faced.

That was a straight-faced lie, and you knew it.

more straight-faced

（ comparative ）

most straight-faced

（ superlative ）