1. Having the attention diverted especially because of anxiety
   - distracted

See also: inattentive

• unknowingness
• unknowledgeable
• unknown
• unknown quantity
• unknown region
• Unknown Soldier
• unlabeled
• unlabelled
• unlace
• unlaced
• unlade
• unladen
• unladylike
• unlamented
• unlash
• unlatch
• unlatched
• unlaureled
• unlaurelled
• unlawful
• unlawful carnal knowledge
• unlawfully
• unlawfulness
• unlax
• unlay