Slow

Slow is a status effect that makes the victim move slower and have reduced jump height.

When two or more slows from different sources are applied to the same target they will not stack: the strongest effect will always be applied or overwrite the weaker one. Different upgrades from the same ability will still stack, however.

Slowing abilities and upgrades
Note: Abilities like Yuri's Time Warp and Raelynn's Timerift are labeled as time modifiers and are not considered "true" slowing effects.

Admiral Swiggins

 * Drop Anchor (Double Glazed Royal Porcelain)

Ayla

 * Evil Eye (Default, further increased by by Biter Mask)

Chucho

 * Sticky Bomb (Secret Krokk Mission Brief)

Clunk

 * Self-Destruct (Grease Lightning Snail)

Coco

 * Blaze (Default, further increased by Disruptor)
 * Shock (Wetsuit)

Commander Rocket

 * Laser Trap (Scorched Cigar Pouch)

Deadlift

 * Protective Pose (Bovinion And Chicken Comic)

Derpl

 * Grid Trap (Default)
 * Gatling (Sweet Syrup Bullets).

Dizzy

 * Explosive Clone ("Purple Prince" Lipstick)

Froggy G

 * Splash Dash (Ice Cubes)

Genji

 * Cocoon (Butterfly Nebula Dust)

Gnaw

 * Acid Spit (Tentacle Soup)

Ix

 * Psionic Bond (Mammoth Hair Scarf)

Ksenia

 * Scissors Throw (Occam's Razor)
 * Vanish (Remembrance Machine)

Leon

 * Slash (Electrifier)

Nibbs

 * Orb Of Omicron (Lion Tail)
 * Dragon Frenzy (Chilas Wax Candle) Only when hitting with four stacks of Frenzy.

Lonestar

 * Summon Hyper Bull (Mature Ribbit Snail Slime)

Rocco

 * Precision Shot (Buff, during Vengeance, further increased by Vulpe Bow String)
 * Rapid Arrows (Buff, during Vengeance, further increased by Vulpe Bow String)

Scoop of Justice

 * Binding Of Justice (Idol Of The Ice Queen)

Skølldir

 * Mighty Throw (Cortexiphan Shake)

Skree

 * Saw Blade (Alien Hula Girl)
 * Totem Of Power (Voodoo Doll)
 * Lightning Rod (Pills For The Mind)

Smiles

 * Tail Whip (My First Machete)

Snork Gunk

 * Sticky Snail (Default, further increased by Red Card Collection)

Yuri

 * Laser (Baby Yeti)