“JIBERS” is a valid word. — 15 points Scrabble

jibesan aggressive remark directed at a person like a missile and intended to have a telling effect
biersa coffin along with its stand
ribesa flowering shrub bearing currants or gooseberries; native to northern hemisphere
birse
briessoft creamy white cheese; milder than Camembert
jiber

risea growth in strength or number or importance
sirea title of address formerly used for a man of rank and authority
ribssupport resembling the rib of an animal
briesoft creamy white cheese; milder than Camembert
bristhe Jewish rite of circumcision performed on a male child on the eighth day of his life
rebs`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
reisany rational or irrational number
biera coffin along with its stand
jibean aggressive remark directed at a person like a missile and intended to have a telling effect
jibsany triangular fore-and-aft sail (set forward of the foremast)
iresa strong emotion; a feeling that is oriented toward some real or supposed grievance
bisea dry cold north wind in southeastern France

sirterm of address for a man
ribsupport resembling the rib of an animal
sri
ser
rei
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
jibany triangular fore-and-aft sail (set forward of the foremast)
resa widely distributed system consisting of all the cells able to ingest bacteria or colloidal particles etc, except for certain white blood cells
sei
irea strong emotion; a feeling that is oriented toward some real or supposed grievance
ers
bis
siba person's brother or sister

ishave the quality of being; (copula, used with an adjective or a predicate noun)
bea light strong brittle grey toxic bivalent metallic element
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
sia tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
esa radioactive transuranic element produced by bombarding plutonium with neutrons
bia heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals

JIBERS