The word euglenoids 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: 16
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (30 words)
deleing, delouse, deluges, dengues, denoise, dilogun, dousing, dueling, elogies, eloigns, eloined, eluding, elusion, goldens, guldens, igneous, indoles, indulge, legends, legions, lingoes, linseed, lounged, lounges, lousing, nodules, oilseed, seeding, singled, unoiled