from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Capable of being maintained in argument; rationally defensible: a tenable theory.
- adj. Capable of being held against assault; defensible: a tenable outpost.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. capable of being maintained or justified; well-founded
- adj. capable of being defended against assault or attack; defensible
from the GNU version of the Collaborative International Dictionary of English
- adj. Capable of being held, maintained, or defended, as against an assailant or objector, or against attempts to take or process.
from The Century Dictionary and Cyclopedia
- Capable of being held, maintained, or defended successfully against an assailant; successfully defensible against attacks or arguments or objections: as, a tenable fortress; a tenable theory.
- Held; retained; kept secret or inviolate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. based on sound reasoning or evidence
French, from Old French, from tenir, to hold, from Latin tenēre; see ten- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the French tenable, from tenir ("to hold"); compare tenible. (Wiktionary)