The word candlelight 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™ Play In The Letters
Seven Letter Word Alert: (50 words)
alethic, aligned, angelic, anthill, calling, cedilla, celling, chained, changed, chanted, chilled, citadel, clanged, dealign, dealing, decalin, delight, deltaic, dialect, echidna, elating, enlight, etching, ethical, gelatin, genital, glanced, glinted, halting, heading, healing, heating, helical, hellcat, hindleg, inhaled, ladling, latched, lathing, leading, leching, ligated, lighted, lighten, tagline, tallied, tangled, telling, tillage, tingled