The word notarises 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: 10
Highest Scoring Words With Friends™ Play In The Letters notarises
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Seven Letter Word Alert: (30 words)
antsier, atoners, inserts, instars, nastier, norites, nosiest, orients, otarine, rations, reasons, restain, retains, retinas, rosiest, satires, seitans, senator, seniors, sestina, sinters, sorties, stainer, stoners, stonier, stories, strains, tensors, treason, triones