The word alchemistical 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: 26
Highest Scoring Words With Friends™ Play In The Letters alchemistical
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Seven Letter Word Alert: (67 words)
accites, acclaim, achiest, aitches, alethic, alltime, ascetic, atheism, cacemia, cachets, calcite, caliche, calicle, calmest, caltech, castile, catcall, catches, cellist, chalets, chalice, chemics, chemist, chilies, ciliate, clastic, cliches, climate, clitics, elastic, elicits, elitism, ethical, halites, hamlets, helical, hellcat, icicles, illites, ischiac, ischial, italics, laciest, lactase, lacteal, laicise, latches, limelit, malaise, malices, mallets, matches, metical, micella, millets, miscall, miscite, mistell, saccate, satchel, sciatic, shellac, silicle, tallies, tallish, tamales, thalami