The word hallucinogen 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: 24
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (42 words)
alcogel, angelic, angulon, calling, cannoli, cauline, celling, channel, choline, cingula, cloning, coaling, coinage, collage, congeal, culling, echoing, enchain, galleon, gluonic, gouache, guanine, halogen, hauling, healing, helical, hulling, lancing, lanolin, leaning, leching, lingual, loaning, logical, nanogel, nucleon, unagile, unalign, unchain, unclean, uncling, unhinge