olemus
sõltub kontekstist, näiteks
- pind, millele saab käsitsi kirjutada
- andmekandja, millele saab salvestada

Wiktionary:
adj
1. capable of being written
Are sign languages writable?
2. (computing, of a file, storage device, etc.) capable of being written to
The file is writable only for users in the admin group.
I burned my family's vacation photos onto a writable CD.