Vehement

/ˈviːəmənt/ adjective easy

Showing intense feeling or force, especially in expressing a strong opinion.

Her vehement objection to the plan stopped the meeting in its tracks.

Memory Trick

Picture the 'veh-' as a vehicle roaring at full force, since both words trace to a Latin root meaning to carry -- a vehement argument comes at you with that same unstoppable energy.