Tips for Teemo against Irelia?

If she's maxing W first, you can go to town. If she's maxing Q or E first, be careful and focus on farm.

E most likely means ganks, Q most likely means high aggression, as they want to trade after you use blind, they stun you for its duration, then will go to town.

Q or W max either means they really know what they're doing around the match-up, or they don't know anything about it at all.

E is the safer route for Irelia, and the one that will let her fight you regardless of blind if you don't build to not get bursted.

If she shows that she knows what she's doing, do not take any risks unless you can make them eat minion damage in a significant sized wave while she's blinded. Use your best judgement, and build to not get bursted down.

The most important thing is that you focus on farm so you have a mid-game to reach. Don't use your Q as harass, Q as you see her E animation go off. Obviously, don't let yourself eat a bunch of autos when her W is on though.

Blind timing is pretty much it. She's designed to counter low mobility people like Teemo. You could rush to have flash/tele up more often if its THAT bad

irelia generally smashes ranged match ups

melee ones too she wins against everything unless you get so horribly far ahead the game would be over under normal circumstances.

Kite kite kite Learn to position and kite, also do not build full dmg

use shrooms and wards to prevent sneak attacks Teemo wins by wearing his opponents down and really doesn't do well against quick fights

Irelia has very strong power spikes all game, especially once she hits level 6 and then again when triforce is completed. Honestly Teemo is a very hard match up against her. You need some serious ganks or honestly switch characters against her. Someone that can stun and beat on her is pretty important, or someone that does raw damage like Illaoi or Darius.

or you could just build a zonyas to reduce her auto attack damage, and activate it if she all ins on you to buy time for your cd's to go down and for the shroom damage to kick in. also helps to get more health like Liandra's and maybe even get a warmogs surprise if you have a big enough lead for it