a·bor·tive 
(ə-bôrtĭv)
(ə-bôrtĭv)adj.
1. Failing to accomplish an intended objective; fruitless: an abortive attempt to conclude the negotiations.
2. Biology Partially or imperfectly developed: an abortive organ.
3. Causing or meant to cause abortion; abortifacient.
a·bortive·ly adv.
a·bortive·ness n.