Surface

6 clues
Veneer
Come up
Superficial
Become apparent
Come out of hiding
Sub captain's command
Similar answers:
Aboutface
Aboutfaced
Aboutfaceoff
Abovethesurface
Absurd
Absurdest
Absurdist
Absurdities
Absurdity
Absurdly
Achestoftreasure
Adabsurdum
Aface
Afaceat
Afaceinthecrowd
Afulldisclosure
Airpressure
Allleisure
Almostsurprised
Ametricmeasure