The word timeserving 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 timeserving
:
Seven Letter Word Alert: (59 words)
entries, enviers, eviting, greisen, grieves, igniter, ignites, integer, interim, inverse, inverts, invitee, inviter, invites, itemise, meeting, metrise, minters, mintier, misgive, mistier, misting, reemits, reeving, regents, regimen, regimes, regives, remiges, remines, remints, resting, restive, retimes, revisit, seeming, segment, serving, sievert, sieving, smiting, stinger, stivier, stiving, striven, teeming, termini, tiering, timings, treeing, trienes, veering, veinier, versine, versing, vestige, vesting, virgins, vitrine