The antonyms for the phrase "free as wind" are endless. Some of the most common antonyms are restricted, bound, imprisoned, trapped, encumbered, and limited. Other possible antonyms include constricted, confined, constrained, enslaved, oppressed, and suppressed. These antonyms are all related to the idea of being held back or restrained in some way, whether it is physically or mentally. For example, being imprisoned or trapped is the antithesis of being free as wind because it involves being confined or restricted. On the other hand, being constricted or suppressed is an antonym because it involves feeling constrained or held back in some way.