The word objectiveness 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: 33
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (36 words)
bisects, boneset, boniest, bovines, cenotes, cession, coesite, consist, cosiest, cosines, covines, ebonics, ebonies, entices, essence, evenest, evictee, evinces, incests, injects, insects, invects, invests, nosiest, notices, novices, objects, obscene, octenes, oecists, section, seitens, sestine, stenose, tocsins, voteens