mid 16th century (as a verb in the sense ‘exult, act arrogantly’): from Latin insultare ‘jump or trample on’, from in- ‘on’ + saltare, from salire ‘to leap’. The noun (in the early 17th century denoting an attack) is from French insulte or ecclesiastical Latin insultus. The main current senses date from the 17th century, the medical use dating from the early 20th century