Asymmetrical – Not identical on both sides of a central line.
The letter ‘A’ joined to a word means not.
The letter ‘A’ joined to a word means not. Tying a knot (A = knot).
If you know that symmetrical means that both sides of something are identical, then it should be easy to learn that asymmetrical means the opposite. The two sides are different. Asymmetrical things are irregular and crooked and don’t match up perfectly when folded in half.
The tree on the right is asymmetrical as its two sides are not a mirror image of each other.
The leaf and bite out of the side of this apple make it an asymmetrical shape.
The paw print on the right is asymmetrical.
The chimney on this house makes the shape asymmetrical.