IPA: /dɪˈliːtəbl/
KK: /dɪˈlitəbl/
Something that can be removed or erased.
You can make the file deletable if you want to remove it later.
Deletable → It is formed from "delet-" (from Latin "deletus", meaning destroyed or erased) and "-able" (meaning capable of). The word "deletable" means capable of being erased or destroyed.
Think of something that can be 'erased' ('delet-') and is 'capable of' ('-able') being removed — that's what deletable means.