1. Of something totally lacking in saturation and therefore having no hue

See also: achromatic, neutral

• relay race
• relay station
• relay transmitter
• relearn
• release
• release number
• releaser
• releasing
• releasing factor
• releasing hormone
• relegate
• relegating
• relegation
• relent
• relentless
• relentlessly
• relentlessness
• relevance
• relevancy
• relevant
• relevantly
• reliability
• reliable
• reliableness
• reliably