1. That may or can be erased.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• eraseable,
• reasable,
• prosable,
• iratable,
• resable,
• perisable,
• ensable,
• easably,
• merciable,
• crabaple,
• wrasable,
• srasable,
• drasable,
• erassable,
• evasable,
• erisable,
• efrayable,
• errabel,
• Evadable,
• verssable

• arable,
• erosive,
• usable.

The adjective form of "erasable" is "erasable".

The plural form of the word "erasable" is "erasables".

The singular form of the word "erasable" is "erasability".