preventable

Concise Oxford English Dictionary © 2008 Oxford University Press:
prevent/prɪˈvent/

▶verb

• 1 keep from happening or arising.

  ■ make unable to do something.

• 2 archaic (of God) go before (someone) with spiritual guidance and help.

– derivatives
preventability noun,
preventable (also preventible) adjective,
prevention noun.

– origin ME: from L. praevent-, praevenire ‘precede, hinder’, from prae ‘before’ + venire ‘come’.