Princeton's WordNet

1. abortive, stillborn, unsuccessful(adj)

   failing to accomplish an intended result

   "an abortive revolt"; "a stillborn plot to assassinate the President"

Wiktionary

1. abortive(Noun)

   That which is born or brought forth prematurely; an abortion.

2. abortive(Noun)

   A fruitless effort or issue.

3. abortive(Noun)

   A medicine to which is attributed the property of causing abortion, abortifacient.

4. abortive(Adjective)

   Produced by abortion; born prematurely; as an abortive child.

5. abortive(Adjective)

   Coming to naught; failing in its effect; miscarrying; fruitless; unsuccessful; as, an abortive attempt.

6. abortive(Adjective)

   Imperfectly formed or developed; rudimentary; sterile; as, an abortive organ, stamen, ovule, etc.

7. abortive(Adjective)

   Causing abortion; as, abortive medicines.

8. abortive(Adjective)

   Cutting short; as, abortive treatment of typhoid fever.

Origin: * First attested in 1382, with meaning "causing stillbirth or miscarriage".

Webster Dictionary

1. Abortive(u)

   produced by abortion; born prematurely; as, an abortive child

2. Abortive(u)

   made from the skin of a still-born animal; as, abortive vellum

3. Abortive(u)

   rendering fruitless or ineffectual

4. Abortive(u)

   coming to naught; failing in its effect; miscarrying; fruitless; unsuccessful; as, an abortive attempt

5. Abortive(u)

   imperfectly formed or developed; rudimentary; sterile; as, an abortive organ, stamen, ovule, etc

6. Abortive(u)

   causing abortion; as, abortive medicines

7. Abortive(u)

   cutting short; as, abortive treatment of typhoid fever

8. Abortive(noun)

   that which is born or brought forth prematurely; an abortion

9. Abortive(noun)

   a fruitless effort or issue

10. Abortive(noun)

    a medicine to which is attributed the property of causing abortion

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