Abortive, å-bor-tiv, a

Nuttall's Standard Dictionary of the English Language · 1890 · p. 1

brought forth in an immature state; imperfectly formed; coming to nought; procuring abortion: s. that which is brought forth prematurely; a monstrous birth. Abortively, a-bort'- iv-le, ad. immaturely; untimely.