The word quaternions 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: 23
Highest Scoring Words With Friends™ Play In The Letters quaternions
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Seven Letter Word Alert: (63 words)
anoints, antique, antsier, atoners, aunties, entrain, equator, inquest, insaner, interns, intoner, intones, introns, inturns, nastier, nations, natures, neurons, neutron, nitrous, nonarts, nonsuit, nonuser, norites, nutsier, orients, otarine, outearn, qintars, querist, quinoas, quinone, quonset, quoters, rainout, rations, restain, retains, retinas, reunion, routine, saunter, senator, sequoia, sinuate, stainer, stonier, stourie, stunner, sunnier, tanners, tension, tinners, tonsure, torques, treason, triones, unearnt, uniters, unrisen, unstain, urinate, urostea