From Dragon Quest Wiki
Hypnowhip is an ability in the Dragon Quest series. It has a chance to confusing enemies.
Dragon Quest VIII: Journey of the Cursed King
In the 3DS remake of VIII, Red will learn Hypnowhip after allocating 10 skill points into her whip skill tree. It functions identically to it's counterpart in IX and costs only 2 MP.
Dragon Quest IX: Sentinels of the Starry Skies
This ability is learned with 3 skill points allocated into Whip skill and costs 3 MP to use. Fuddle chance is 12.5% per enemy.
Dragon Quest XI: Echoes of an Elusive Age
Veronica will learn hypnowhip for 3 skill points in her whip path. It costs 5 MP to use, deals 110% damage to the first enemy, and now has a 25% chance to fuddle foes per lashing.
HP recovery skills
MP recovery skills
Ailment alleviating skills
Bonus damage skills
Turn order skills
Physical support skills
Magical support skills
Songs and hymnal skills
Dances and shimmy skills