Freely
At Will, Flexible, Adjustable
noun, な adjective, の adjective
When you can exist all by yourself, then you can do things freely as you please.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
コウイチは、自由自在な発想でいつもみんなをおどろかせてくれます。
Koichi always surprises people with his very flexible ideas.
しんしゅく自在の犬用リードを探しています。
I'm looking for an adjustable leash for dogs.
あの男は、他人の心を自在に操れる。
That man can manipulate minds at will.