Hayai is the Japanese word for "fast" and is used typically used to describe someone doing something quickly. It is also frequently used in anime, particularly in action anime, when someone is surprised with how fast something is happening.
The Hero and the Villain are fighting each other on what seems to be even terms. They separate and create some distance between each other.
Villain: You're doing well, but can you keep up with this?
The Villain doubles his speed and catches the hero off-guard as he approaches
The Hero would then exclaim "H-Hayai!" and proceed to be beaten up at high speeds.
A girl with a beautiful smile. When people see his smile, he smiles too. Her smile is as beautiful as the flowers bloom i the morning. There will be a man in love with his smile.
A Hayniac is someone who fangirls (or is a fan of) the one and only-Hunter Hayes. This person listens to all of his songs, stares at beautifulpictures of him all day, and is hopelessly in love with him. Hunter Easton Hayes is perfect-so look him up. You're going to wish you had a storm warning-so here it is.
"You're a Hayniac!?!?! Me too! Omfg Hunter is just so flawless and his voice is like a million angels. auhgfuahfgkhadfg"
An Arabic word that means "my life", also commonly used as a term of endearment. Urdu and Hindi have adopted the Arabic word with similar meaning. Also equivalent to Hindi/Urdu "jaan" (Arabic origin word as well), and Farsi "joon" (also Arabic origin word).