The phrase "go lame" is typically used to describe when a person or animal becomes unable to walk properly or experiences difficulty moving. Some possible synonyms for this phrase might include "become lame," "limp," "stumble," "trip," or "hobble." Other expressions that could be used to describe this situation might include "lose one's footing," "experience difficulty walking," or "suffer from lameness." These phrases could be used in a variety of contexts, such as when describing a horse with a leg injury or a person with a sprained ankle. By using different synonyms and descriptive language, writers and speakers can communicate their meaning more effectively and concisely.