Something that can be prevented.

Capable of being prevented.

The quality of being preventable.

plural of preventable

(uncountable) The condition of being preventable / (countable) The extent to which something is preventable

In a preventive way

In a manner that is preventative.

present participle and gerund of prevent

The act of preventing or hindering; obstruction of action, access, or approach; thwarting.

(transitive) To stop (an outcome); to keep from (doing something). / (intransitive, now rare) To take preventative measures. / (obsolete, transitive) To come before; to precede.