The word dictaphone 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: 20
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (29 words)
aconite, caption, cathode, chained, chanted, echidna, ectopia, edaphic, headpin, hepatic, indepth, nepotic, notched, notepad, noticed, opiated, painted, patched, patined, picante, pinched, pinhead, pitched, pithead, poached, pointed, pothead, potiche, tacnode