The word obligingness 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 obligingness
:
Seven Letter Word Alert: (39 words)
belongs, bigness, bilging, binging, boggles, boiling, bossing, elision, eloigns, ensigns, ginseng, glioses, gliosis, goblins, gosling, ignoble, inlines, inosine, insoles, ionises, legions, lensing, lesions, lignins, lingoes, linings, lioness, lionise, longing, losings, obliges, sensing, sibling, sieging, signing, singing, singles, sniggle, soiling