From un- + writable. <span class="searchmatch">unwritable</span> (not comparable) Not writable. (computing) read-only...
From in- + écrivable. inécrivable (plural inécrivables) <span class="searchmatch">unwritable</span>...
From un- + writeable. unwriteable (not comparable) Alternative form of <span class="searchmatch">unwritable</span>...