The word godchildren 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: 22
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (31 words)
chlorin, choline, choregi, choring, clinger, clodder, codding, coddler, codling, cording, coreign, cringed, dodgier, echoing, eroding, girdled, glochid, gloried, godlier, griddle, grinded, groined, herding, hindleg, holding, ignored, leching, leghorn, negroid, redoing, rodding