Extreme degree: 极了, 死了

Structure Adjective + 极了 / 死了

For a maxed-out degree, after the adjective you add 极了 ("extremely…") or, more colloquial and over-the-top, 死了 ("…to death"): 好极了 = "fantastic!"; 累死了 = "dead tired". They go after the adjective, unlike 很/太 which go before. 死了 sounds strong and informal.

Examples

好hǎo极jí了le！
Fantastic!
我wǒ累lèi死sǐ了le。
I’m dead tired.
今jīn天tiān热rè死sǐ了le。
It’s scorching today.

Levels are indicative: they follow the standard Chinese Grammar Wiki (AllSet Learning) progression, not an official HSK 3.0 mapping. We never assign levels by eye.

This point and the other 370, with audio on every example, inside Wanyu.