Big Huge Thesaurus

firmament

noun

• celestial sphere
• sphere
• empyrean
• heavens
• vault of heaven
• welkin
• surface

sounds kind of like

• fahrenheit
• fair-minded
• far and away
• far and wide
• farm out
• farmhand
• fermat
• ferment
• ferned
• fire ant
• foray into
• forehand
• forehanded
• forint
• format
• formed
• four-in-hand
• fourhanded
• framed
• free hand
• freehand
• freehanded
• fremont
• fremontia
• friend
• from head to toe
• frond
• front
• front tooth
• frumenty