To the utmost (之极/之至/至极)

Structure Adjective + 之极 / 之至 ·（or）adjective + 至极

之极, 之至 and 至极 are learned degree complements that go AFTER an adjective to push it to the extreme: "utterly…", "to the highest degree". 美丽之极 = "of extreme beauty"; 感激之至 = "deeply grateful"; 荒唐至极 = "the height of absurdity". 之至 leans formal and polite (感激之至, 荣幸之至); 至极 often colours the negative (荒唐至极, 无聊至极). It contrasts with 之大/之高, which nominalize a NOUN's magnitude: here you CAP an ADJECTIVE. It is the other end of the cultured degree axis, absent from HSK 1-5.

Examples

这zhè处chù风fēng景jǐng美měi丽lì之zhī极jí，令lìng人rén流liú连lián忘wàng返fǎn。
This scenery is of extreme beauty; one is loath to leave.
承chéng蒙méng关guān照zhào，感gǎn激jī之zhī至zhì。
I am deeply grateful for your kindness.
他tā的de言yán论lùn荒huāng唐táng至zhì极jí。
His remarks are the height of absurdity.
独dú自zì守shǒu着zhe空kōng房fáng，寂jì寞mò之zhī至zhì。
Alone keeping the empty house, utterly forlorn.

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.