The word "antistrumatick" is a now obsolete term that was commonly used in the 18th century to describe something that counteracts or prevents the effects of a blow or trauma. The spelling of this word may appear confusing at first glance, but it can be broken down phonetically as /æntɪˈstrʌmətɪk/. The "anti-" prefix means "against" while "strumatick" refers to anything related to trauma. The extra "k" at the end was a common spelling convention in the past but is no longer used in modern English.