I find most doctors' handwriting indecipherable.
It means you can't read someone's handwriting. That is their handwriting is so scrawly or something that you can't see what it says, rather than you can't read. I.e. their handwriting is illegible.
The ancient manuscript was indecipherable, with its faded and worn text proving to be a mystery to all who attempted to read it.
The homonym for indecipherable is indecipherable. Homonyms are words that sound the same but have different meanings, and in this case, there is no different word with the same pronunciation.
Indecipherable is an adjective. It describes something that cannot be understood or interpreted easily.
The hunter stalked silently through the forest, eyes trained on its prey.
She was able to achieve her goals through clever manipulation of the situation.
The pupil in my class raised her hand to answer the question.
His handwriting was so bad the message in the note was undecipherable,
I am not writing a sentence using that word.
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a sentence using the word endotracheal
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This is a sentence using the word monomer. :P
this is a sentence using the word armchair.
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I can write a sentence using the word scorn!
This is an example of a sentence using the word breakfast.