Illegibly is the adverb: you write, print, or sign in a way that other people cannot read. He signed his name illegibly means the signature is there, but it is only a scribble. The meaning you meant may be fine; the problem is the hand, the ink, or the mess on the page.

Illegibly is the adverbIllegibly是個副詞 you write, print, or sign in a way that other people cannot read指你寫字、印刷、或簽名的方式讓別人看不懂 He signed his name illegibly means the signature is there, but it is only a scribbleHe signed his name illegibly意思是簽名確實有簽，但只是一團潦草的筆跡 The meaning you meant may be fine你想表達的內容本身可能沒問題 the problem is the hand, the ink, or the mess on the page問題出在筆跡、墨水、或整張紙看起來很亂

Though actually, everyday speakers more often say so badly I cannot read it. Illegibly turns up when someone wants one tidy word for that idea, especially in writing about writing.

Though actually, everyday speakers more often say so badly I cannot read it不過其實日常講話的人更常直接說so badly I cannot read it（爛到我看不懂） Illegibly turns up when someone wants one tidy word for that ideaIllegibly會在有人想用一個工整的字來表達這個概念時出現 especially in writing about writing尤其是在討論書寫本身的文章裡

Pair it with a verb of making marks: write, scrawl, sign, print. You do not say a person speaks illegibly — that would be about the voice, and this word is about what the eye can read.

Pair it with a verb of making marks: write, scrawl, sign, print把它搭配跟寫字動作有關的動詞：write、scrawl、sign、print You do not say a person speaks illegibly你不會說一個人speaks illegibly that would be about the voice那會變成是在講聲音 and this word is about what the eye can read而這個字講的是眼睛看不看得懂