Preventable.

plural of averter

One who, or that which, averts.

simple past tense and past participle of avert

(transitive) To turn aside or away. / (transitive) To ward off, or prevent, the occurrence or effects of. / (intransitive, archaic) To turn away.

Capable of being averted; preventable.

Turned away, especially as an expression of feeling; also, offended; unpropitious.

Third-person singular simple present indicative form of avert

present participle of avert