Free as the wind is a common phrase that expresses the idea of freedom, movement, and spontaneity. However, there are several antonyms or opposites that convey a contrasting message. For instance, the opposite of free as the wind could be restricted or constrained, indicating limitations and boundaries. Another antonym could be predictable or routine, conveying the idea of conformity and predictability. Besides, stagnant, stuck or inactive could also be antonyms for free as the wind, implying the lack of motion or growth. Ultimately, the antonyms of free as the wind highlight the importance of constraints, predictability, and stability in contrast to the notions of freedom and spontaneity.