adj. 1. Not easily bent; stiff or rigid. See stiff. 2. Incapable of being changed; unalterable: an inflexible rule. 3. Refusing to change one's attitude, purpose, or principles; immovable: an inflexible disciplinarian. in·flex′i·bili·ty, in·flexi·ble·ness n. in·flexi·bly adv. |
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