Bestraddle is a unique word that describes an action of sitting or standing with one leg on each side of something. Though this term is not frequently used, some synonyms can replace it. Straddle seems to be the most popular alternative, with with major overlap in meaning. Other options include sitting astride, riding astride, or spanning. These synonyms indicate the same physical position as bestraddle, but they differ in terms of connotation. Depending on context, one may be more appropriate and convey a specific nuance or emotion. Nonetheless, bestraddle remains a useful and interesting word that can spice up conversations or writing.