The word cauterised 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: 15
Highest Scoring Words With Friends™ Plays In The Letters cauterised
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Seven Letter Word Alert: (69 words)
aeriest, aridest, astride, auditee, austere, catered, cauters, cerates, creased, created, creates, credits, crested, cristae, crudest, cruised, crusade, crusted, curated, curates, custard, dacites, dearest, dearies, decares, deceits, decries, decrust, deicers, diester, dieters, directs, disrate, drastic, ductase, dustier, educate, eructed, erudite, euaster, raciest, radices, reacted, readies, reasted, reaudit, recited, recites, recused, redacts, redates, reduces, reducts, reedits, rescued, residue, rudites, saucier, sauteed, secured, sedater, seducer, seriate, sidecar, studier, tasered, tirades, traduce, uricase