The word concertizing 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: 31
Highest Scoring Words With Friends™ Play In The Letters concertizing
:
Seven Letter Word Alert: (30 words)
centric, citizen, citrine, coining, conceit, concern, concert, connect, coreign, cornice, corning, iconize, icteric, igniter, ignitor, inciter, intoner, ionizer, ironing, reicing, reining, renting, rioting, tiering, tinnier, zeroing, zincier, zincing, zincite, zingier