from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not easily bent; stiff or rigid.
- adj. Incapable of being changed; unalterable.
- adj. Unyielding in purpose, principle, or temper; immovable.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Not flexible; not capable of bending or being bent; stiff; rigid; firm; unyielding.
- adj. Not willing to change, e.g. one's opinion or habits; obstinate; stubborn; resolute; determined.
from the GNU version of the Collaborative International Dictionary of English
- adj. Not capable of being bent; stiff; rigid; firm; unyielding.
- adj. Firm in will or purpose; not to be turned, changed, or altered; resolute; determined; unyieding; inexorable; stubborn.
- adj. Incapable of change; unalterable; immutable.
from The Century Dictionary and Cyclopedia
- Not flexible; incapable of bending or of being bent; rigid: as, an inflexible rod.
- Unyielding in temper or purpose; that will not yield to prayers or arguments; firm in purpose; incapable of being turned; not to be prevailed on.
- Not to be changed or altered; unalterable; not permitting variation.
- Synonyms Rigid, stiff.
- Inexorable, inflexible, resolute, steadfast, unbending, unyielding, immovable, unrelenting; obstinate, stubborn, dogged.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. incapable of change
- adj. incapable of adapting or changing to meet circumstances
- adj. not making concessions
- adj. resistant to being bent
in- + flexible (Wiktionary)