preventable Definition

prevent
verb prevented, preventing

1. To stop someone from doing something, or something from happening; to hinder.

Thesaurus: inhibit, frustrate, stop, restrain, stave off, check, thwart, forestall, frustrate, foil, intercept, obstruct, check, block, hamper, head off, preclude, impede; Antonym: permit.
2. To stop the occurrence of something beforehand or to make it impossible; to avert.

Derivative: preventable
adj

Etymology: 16c: from Latin praevenire to anticipate or come before.