The word childproofed 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
Seven Letter Word Alert: (26 words)
chirped, choroid, clodder, coddler, croodle, decolor, doodler, drooled, drooped, fiddler, filched, filcher, flooded, flooder, floored, loopier, piddler, plodder, policed, pooched, poofier, porched, precool, profile, proofed, reflood