The word checkpoints 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: 27
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (43 words)
chicken, chipset, choices, cinches, cockets, cockish, cockpit, conceit, concept, conches, concise, ectopic, ethnics, histone, hospice, inkpots, inkspot, inspect, iphones, kitchen, nepotic, notches, notices, peckish, pectins, petcock, phonics, phonies, pickets, pinches, pinkest, pitches, pockets, poetics, pokiest, potiche, sceptic, schtick, section, skeptic, sphenic, thicken, thiones