The word abolitionisms 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: 21
Highest Scoring Words With Friends™ Play In The Letters abolitionisms
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Seven Letter Word Alert: (34 words)
abiosis, albinos, animist, bassoon, bastion, biomass, biotins, blossom, boltons, bonsais, iambist, initial, liaison, lionism, lotions, militia, mission, mitosis, monilia, moonlit, motions, oboists, obtains, sabinos, salmons, saloons, simians, soloist, somonis, stanols, tabooli, tobiano, tonsils, toolman