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

See also: achromatic, neutral

• perennially
• perennity
• Pereskia
• Pereskia aculeata
• perestroika
• perfect
• perfect game
• perfect gas
• perfect number
• hidden tax
• hiddenite
• hiddenness
• hide
• hide and go seek
• hide-and-seek
• hideaway
• hidebound
• Hideki Yukawa
• hideous
• hideously
• hideousness
• hideout
• hider
• hidey-hole
• Hideyo Noguchi