The word intravenous is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 18
Highest Scoring Words With Friends™ Play In The Letters intravenous
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Seven Letter Word Alert: (78 words)
anoints, antsier, atoners, aunties, entrain, envious, environ, evasion, insaner, interns, intoner, intones, introns, inturns, invents, inverts, naivest, nastier, nations, natives, natures, nervous, neurons, neutron, nitrous, nonarts, nonsuit, nonuser, norites, nutsier, orients, otarine, outearn, outrave, ovaries, oversat, oversit, rainout, rations, ravines, restain, retains, retinas, reunion, revuist, routine, saunter, saviour, senator, servant, sinuate, stainer, stonier, stourie, striven, stunner, sunnier, tanners, taverns, tension, tinners, tonsure, treason, triones, unearnt, uniters, unrisen, unrivet, unstain, urinate, urostea, vainest, various, venison, veritas, version, vintner, virtues