When referring to an established or enduring situation, the phrase "long standing" can be replaced with several synonyms. These include the terms "entrenched," "established," "enduring," and "time-honored." Another option is "long-standing tradition," which can be replaced with "age-old," "timeless," or "ancient." In a medical context, "long-standing condition" can be described as "chronic," "long-running," or "persistent." Similarly, in legal matters, "long standing precedent" can be replaced with the term "established legal principle." All of these synonyms convey the longevity and established nature of a particular situation, tradition, condition, or principle.