1. Inducing or aiding in facilitating neural activity

See also: facilitate, helpful

• unworn
• unworried
• unworthily
• unworthiness
• unworthy
• unwounded
• unwoven
• unwrap
• unwrapped
• unwrinkled
• unwritten
• unwritten law
• unyielding
• unyieldingness
• unyoke
• unzip
• up
• up and down
• up for
• up for grabs
• up here
• up in arms
• up in the air
• up quark
• up the creek