This is why dictionaries list more than 1 definition and you shouldn’t stop at the first one: weak; inadequate; unsatisfactory; clumsy. a lame excuse. Slang: Sometimes Disparaging and Offensive. awkward, dull, stupid, or uninteresting. Slang: Sometimes Disparaging and Offensive. out of touch with modern fads or trends; unsophisticated. www.dictionary.com/browse/lame