INFLEXIBIL'ITY INFLEX'IBLE, adjective [Latin inflexibilis.] 1. That cannot be bent; as an inflexible oak. 2. That will not yield to prayers or arguments; firm in purpose; not to be prevailed on; that cannot be turned; as a man of upright and inflexible temper. 3. Not to be changed or altered. The nature of things is inflexible.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI