To Get Tired
intransitive verb, ichidan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means tired, so the verb version means to get tired. 疲れる refers to a physical or mental kind of tiredness, like you just worked out or studied a ton, but isn't used to describe sleepiness.
つかれる
For example, you're bound to get tired if you try to lift two cars (つか), right? So think about that as you learn this word's reading.
うちの犬はおじいちゃんなので、すぐ疲れるんです。
My dog is an old man and gets tired easily.
もう考えるのに疲れちゃったんだよ。
I'm tired of thinking.
目が疲れてるんじゃない？
Maybe your eyes are tired.