The word ambassadorial 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: 21
Highest Scoring Words With Friends™ Play In The Letters ambassadorial
:
Seven Letter Word Alert: (32 words)
abasias, abmodal, abraids, admiral, adsorbs, airmass, ambroid, armadas, armload, balsams, barmaid, basilar, bimodal, biomass, bridals, dalasis, diorama, disarms, disbars, dismals, dorsals, isobars, lambdas, malaria, masadas, milords, radials, sailors, salaams, salamis, samaras, sariama