Dream Symbols starting with the letter U.

Umbrella : This depends on how the Umbrella appears in the dream. Typically, it is associated with protection and shelter.

Underground : The underground may denote aspects not yet known. Subconscious. Hidden object buried underground may denote  secret.

Underwater : 1. Denotes being immersed in one’s emotion.
2. If in the sea, denotes entering and accessing subconscious mind state.

Undressing : Revealing of something that was previously unknown. Revelation. Desire to free  oneself of burdens.

Uniform : Associated with conformity.