The word gnatcatchers 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: 23
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (59 words)
acaters, accents, actants, anarchs, anthers, archean, arctans, argents, attache, cachers, cachets, cancers, canters, carnage, cartage, catcher, catches, chances, chancre, changer, changes, chanter, charges, chasten, chaster, chatter, eartags, etchant, garnets, gathers, gnasher, hangars, hangers, hastate, hatters, natters, nectars, ranches, ratchet, recants, recatch, regatta, rehangs, saccate, scanter, scatter, scratch, shatter, strange, stretch, tanager, targets, tartans, teacart, teargas, threats, trachea, trances, tranche