uncountable?

# File activesupport/lib/active_support/inflector/inflections.rb, line 68
        def uncountable?(str)
          if @pattern.nil?
            members_pattern = Regexp.union(@members.map { |w| /#{Regexp.escape(w)}/ })
            @pattern = /\b#{members_pattern}\Z/
          end
          @pattern.match?(str)
        end