this is not example of good hindi.
firstly, I couldnt understand what on earth this can mean. After reading Gagan I understood what you wanted to say.
This is exclamatory sentence and that too slightly less used version. Better to use, ¨thodi hi hai!!¨
yes, use the symbol and insert a HI before hai. It will become clearer.
¨Thodi hi hai¨ is a phrase which means, ¨nahi hai¨
Like is so many other cases, single words out of a phrase dont make much sense, not at least contextual sense.
so, we abhiyukt thodi (hi) hai!! = we (or better say wo) abhiyukt nahi hai.