The term ASDF is an internet slang that refers to the first four keys on a keyboard that are struck with the left hand from the home position. It is used to express a strong emotional reaction, whether positive or negative, to something someone said or a situation.

" Asdf " are the four letter keys in the left hand-side home row of a standard QWERTY keyboard. In the context of online conversations, the letters are commonly used as a placeholder to convey anger, annoyance or joy, oftentimes in substitute for an obscenity or swearword.

What does asdf mean? Asdf are the first four letters from the left in the home row on a QWERTY keyboard, often used as filler text when typing or programming or to express high emotion as a “keysmash.”