The name Aikido is composed of three Japanese words: ai, meaning harmony; ki, energy; and do, the path, system or way. Aikido is the way of harmony. A martial arts studied for self-defense using the philosophy of non-resistance.
Aikido uses the opponent’s strength and momentum against themselves - to throw or lock them. This is the principle of "Ju no ri," when the opponent pushes, the defender pulls, and when pulled, the defender pushes.
Aikido uses maii (combative distance) and tai sabaki (efficient movement) or atemi (striking) to achieve kuzushi (unbalancing) over one's partner to achieve a throw or lock. The aim is always to find the path of least resistance and maximum efficiency.