“VIVIPARA” is a valid word. — 16 points Scrabble

vivariaan indoor enclosure for keeping and raising living animals and plants and observing them under natural conditions

paira set of two similar things considered as a unit
vivaan examination conducted by spoken communication
ariaan elaborate song for solo voice
para(obstetrics) the number of liveborn children a woman has delivered
varaa Spanish unit of length (about a yard) having different values in different localities
raia
vair

aira mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
ripa dissolute man in fashionable society
rapa reproach for some lapse or misdeed
via
ava
par(golf) the standard number of strokes set for each hole on a golf course, or for the entire course
piaperennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch
ria
vara unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere
vav

paan informal term for a father; probably derived from baby talk
aian agency of the United States Army responsible for providing timely and relevant and accurate and synchronized intelligence to tactical and operational and strategic level commanders
ara colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
pithe ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
aaa dry form of lava resembling clinkers

VIVIPARA