1. Redness of the skin caused by exposure to the rays of the sun
   - sunburn

Type of: erythema, first-degree burn

• unintended
• unintentional
• unintentionally
• uninterested
• uninteresting
• uninterestingly
• uninterestingness
• uninterrupted
• uninterruptedly
• unintimidated
• unintoxicated
• unintrusive
• uninucleate
• uninventive
• uninvited
• uninvitedly
• uninviting
• uninvolved
• Unio
• uniocular
• uniocular dichromat
• union
• Union Army
• union card
• Union flag