Similar to improviso
- improvidus – feckless, improvident, negligent, thoughtless
- improbitas – depravity
- improbus – bad, bold, impudent, inferior, outrageous, persistent, perverse, self, wicked
- inviso – inspect, look at, to go to see, visit
- imminuare – abbreviate
- immerito – undeservingly, unjustifiably, without merit
- impetus – assault, attack, force, impulse, onset, passion, rapid motion, rush, sudden passion, vehemence