<p><strong>Adjective</strong></p><ul><li>failing to succeed; unsuccessful: an abortive rebellion; an abortive scheme.</li><li>born prematurely.</li><li>imperfectly developed; rudimentary.</li><li>producing or intended to produce abortion; abortifacient.</li><li>acting to halt the progress of a disease.</li><li>(of the course of a disease) short and mild without the usual, pronounced clinical symptoms.</li><li>(of seeds or pollen grains) imperfect; unable to germinate.</li></ul><p><strong>Verb</strong></p><ul><li>to make obsolete by replacing with something newer or better; antiquate: Automation has obsoleted many factory workers.</li></ul>