"define the word as it is used in the sentence."
the sentence is- "grandmother would have gad hysterics if she had seen me in this outfit." how do i define that?

This sentence means (assuming that you meant gad) that the person stating the sentence's grandmother would be very distraught about seeing them in that outfit. 'Gad hysterics' mean that continuously going around and wildly emotional.

Hope this helps! If you have any other questions or would like further explanation just let me know! :)

Hey perhaps you should add the passage? then we'll be able to you! : )