In-flexibly is a term that refers to someone or something that is not willing to change or adapt. The antonyms for in-flexibly are quite numerous and they include terms like flexibility, ease, pliability, adaptability, and openness. These words are all used to describe a person, idea, practice, or situation that can change or be modified in response to different situations or circumstances. When we are flexible, we can negotiate and adjust our perspective, behavior, or expectations in order to achieve our goals. A pliable approach to life can help individuals to develop resilience and cope with unpredictable events, while openness can create opportunities for new experiences and learning.