Turning easily and securely as on a perfect axle

U

Unbends like a loosened bow

Unbreakable as iron

Unconscious as an oak-tree of its growth

Under the willow-tree glimmered her face like a foam-flake drifting over the sea

Unheralded, like some tornado loosed out of the brooding hills, it came to pass

Unknown, like a seed in fallow ground, was the germ of a plan

Unmoving as a tombstone

Untameable as flies