The Word - Nary

No...Yorvet couldn't afford to let him escape. And what easier way to keep him from leaving than making him a horse? Even if he had given his word, which he wouldn't have, that he wouldn't try to leave, Yorvet couldn't trust that. No, it didn't appear that there was nary an option that would allow him to stay human.
Kolt lowered his blade, slipping it back into the sheath one his leg. He was in between a rock and a hard place. "I won't train to kill for you." He said finally turning away. "So if you're going to make me a horse do it already." He hated the horse form. But serving as a hired hand was the last thing he wanted to make of his life.

Nary - not any : not one

Added Info -"Nary," often used in the phrase "nary a" to mean "not a single," is an 18th-century alteration of the adjectival phrase "ne'er a," in which "ne'er" is a contraction of "never." That contraction dates to the 13th century, and the word it abbreviates is even older: "never" can be traced back to Old English naefre, a combination of ne ("not" or "no") and aefre ("ever"). Old English ne also combined with a ("always") to give us na, the Old English ancestor of our "no." A, from the Latin aevum ("age" or "lifetime") and Greek aion ("age"), is related to the English adverb "aye," meaning "always, continually, or ever." This "aye" (pronounced to rhyme with "say") is unrelated to the more familiar "aye" (pronounced to rhyme with "sigh") used as a synonym of "yes."