Because if Tenacity does affect and lower the duration of knock-ups then this needs to be added to Tenacity tool tips so that everyone knows exactly what Tenacity does, and not have a "I think it does?".
Also more Tenacity options would be nice to be added and a movement speed item mages could buy similar to how marksmen sell boots for Zephyr in the end game builds.
~ Stacona
Hullabaloo9074 votesNope, it does not. It lists all the crowd control effects it stops in the item description.
Stacona2 votesThat is the thing I thought it never did affect knock-ups - but to be honest it would make sense for Tenacity to lower their duration because I only want Suppression to be the ultimate CC and not have knock-ups competing for that especially since a lot of knock-ups are just basic abilities and have no trade offs for being uncounterable unlike how suppression works
Hullabaloo9071 votesSuppressions are really a unique type of cc, because it is usually a champion who is almost self cced to cc another champ. It is also stopped if the source is cced, where as all other forms of cc are instant. You also usually do a ton of damage while you suppress someone, unlike most other cc. That is probably why suppressions are immune to tenacity, but can be removed with a qss. It would be really weird if mercs made a warwaick ult 35% shorter.
Knockups are probably immune to tenacity because of the animation, same with knockbacks. They are also immune to any cleansing, unlike suppresions. They are balanced around being the "strongest" by also usually being the shortest. Suppresions are probably the weakest, because they are interrupt-able by other cc. This is balanced out with you doing tons of damage to the target while they are suppressed, excepting urgot, who sucks. Other cc that does damage are usually spells with two parts, such as swains laser bird. The damage and the slow are two separate things, with the damage continuing after the slow if you have tenacity.
Sire Hippington1 votesKockups are not immune to tenacity because of the animation. The knock up duration and high is variable(see Janna Q) And i realy don'T have the feeling that knockups are really balanced around being the 'strongest'....
Sire Hippington1 votesno, curretnly tenacity does not affeckt knockups, knockbacks, pulls or any other displace. It's somewhat understandable that knockbacks or pulls are not affeckted for gameplay consistancy, but knock ups simply serve as fancy stuns, so i see no reason why riot shouldn't change tenacity to work on knock-ups aswell.
Stacona1 votesknock-backs, push-backs, and displacement spells don't even have a duration-- but because knock-ups do not have a trade off like suppression and cannot be cleanse or QSS'd either then what is with suppression? Suppression is suppose to be the ultimate of CCs and yet knock-ups are on basic abilities and are stronger, this should never occur, knock-ups should have durations reduced with tenacity and leave suppression as the ultimate CC (i want them to add more suppression champs, and also more blind champs)
EffectFX1 votesSuppressions last far longer than stuns or knock ups. So they're not inferior to knock-ups in anyway.
Stacona2 votesthe longest suppression is 2.5 seconds which is malzahar's ultimate- 1.75 is skarner, 1.8 is warwick- and i think urgot is only 1 second--- Veigar stun is 2.5 seconds, Fiddle fear 2.25 seconds, rammus taunt 2.25 seconds, morg binding 3 seconds (needs to be lower by 0.5 second)--- and do not forget that suppression has some kind of trade off and can be QSS'd knock-ups DO NOT have any counter items or trade offs which is why they end up being more superior than what is suppose to be the ultimate CC known as suppression
Marthian1 votesExcept suppression is still extremely strong.
Stacona2 votesThat is not the point, the point is a basic ability crowd control ends up being stronger than the ultimate suppression
wolfax1 votesIt lasts longer than knockups. It's not meant to be the pinnacle of CC, it's meant to be a longer, harder to break out of CC while knockups and knockbacks are the short ones that can't be broken out of.
Stacona1 votesSuppression is meant to be the ultimate crowd control
EffectFX1 votesI mean you're also only comparing the CC component of the abilities.
Malz deals damage (and is intended to lock targets into his other abilities) Skarner's ult lets you drag someone to where you them. Warwick is basically a gap closer, deals damage, applies on hit affects and heals him Urgot switches places with the target, slows them, and grants himself a 60-120 armor/magic resist.
deadlychuck1 votesI heard once that tenacity does affect a few specific knock-ups which have a stated duration. I believe 
ult and 
Q to name a few.
Although i haven't tested this myself, and the duration tend to be so short it's hard to notice in game if you aren't specifically watching for it.
I Main Swain2 votesI believe tenacity only helps with the slow on cho's q. not sure about malphite's ultimate
EffectFX1 votesNo, they are not affected by tenacity.