Tiredy is the word you use when you get bored with saying "Im tired." Its also a mix of the word sleepy.
Person 1: Im bored of saying Im tired or Im sleepy!
Person 2: How about tiredy?
Person 1 What the fuck is that?
Person 2 Its tired and sleepy mixed. Tiredy
When you not sick sick but feel tired enough, sorta feels like you are dying
Man 1- yo are you sick?
Man 2- nah bro, just feeling a little sicky tiredy.
Man 1-rest up bro