free-form 
adjective
Not conforming to a regular or formal structure or shape: a free-form jazz improvisation...
- The chosen shape was a genuine free-form structure impossible to analyze logically.
- A flowerbed in the shape of a circle, square, or octagon looks formal, while one with a free-form shape has a casual look.
- These tiles are characterized by slender lines, geometric shapes, or more free-form patterns.
- like nothing on earth
- like (or for) grim death
- like peas (or two peas) in a pod
- like pulling teeth
- Likert scale
- like shit
- like shooting fish in a barrel
- like sin
- like so
- like stink
- like that
- like the cat that got (or stole) the cream
- like the clappers
- like the deuce
- like the devil
- like the wind
- like turkeys voting for Christmas
- like watching paint dry
- like water
- like water off a duck's back
- likewise
- like ——, like ——
- liking
- likkewaan
- Likud