“PROBER” is a valid word. — 10 points Scrabble

probean inquiry into unfamiliar or questionable activities
ropera decoy who lures customers into a gambling establishment (especially one with a fixed game)
borera drill for penetrating rock
repro
rebop

bro
per
robtake something away by force or without the consent of the owner
proan athlete who plays for pay
repinformal abbreviation of `representative'
errto make a mistake or be incorrect
orea mineral that contains metal that is valuable enough to be mined
orbthe ball-shaped capsule containing the vertebrate eye
bopthe law enforcement agency of the Justice Department that operates a nationwide system of prisons and detention facilities to incarcerate inmates sentenced to imprisonment for federal crimes
roefish eggs or egg-filled ovary; having a grainy texture
reb`Johnny' was applied as a nickname for Confederate soldiers by the Federal soldiers in the American Civil War; `greyback' derived from their grey Confederate uniforms
ope
brr
obe

bea light strong brittle grey toxic bivalent metallic element
ora state in northwestern United States on the Pacific
era trivalent metallic element of the rare earth group; occurs with yttrium
rea rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum
bo
op
pethe 17th letter of the Hebrew alphabet
oe

PROBER