- eruptio – an eruption, assault, attack, bursting forth, sally
- impetus – assault, attack, force, impulse, onset, passion, rapid motion, rush, sudden passion, vehemence
- impugno – assault, to attack
- incursio – assault, attack, clash, collision, foray, invasion, raid
- incursus – an attack, assault, efforts, impulses
- ingressus – assault, enter, entering, go in, going in, inroad, movement, to step in, walk
- ingruo – assail, assault, attack, to fall upon, to fall violently upon
- insultus – assault, attack
- oppugno – assail, assault, attack, storm, to fight against, to war with