The word decimalising 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
Seven Letter Word Alert: (85 words)
aedilic, aisling, alginic, aligned, amnesic, angelic, anilide, calming, camelid, candies, candles, ceasing, ceiling, cinemas, claimed, clanged, dailies, dangles, dealign, dealing, decalin, decimal, declaim, deicing, denials, dialing, diamine, digicam, diimine, dingies, eliding, encalms, enigmas, geminal, genials, glanced, glances, gmelina, icedams, icemans, imagine, imidine, incased, incised, indices, lacings, ladings, laicise, leading, leasing, liaised, ligands, maidens, mailing, malices, maligns, mangled, mangles, medians, medical, melding, menisci, midline, mingled, mingles, misdeal, misdial, mislaid, mislead, sailing, scaling, sealing, seaming, seminal, sideman, sidling, singled, slanged, slicing, sliding, sliming, smidgen, smidgin, smiling, snailed