The letters in SECURITY make 197 words of two letters or more. The longest is SECURITY at 8 letters, and the highest-scoring is SECURITY at 13 points.
No other single word uses all 8 letters of SECURITY. SECURITY has 8 letters: 3 vowels and 5 consonants, worth 13 points before any board bonuses.
8-letter words 1
7-letter words 5
citrusy12curites9curtesy12curtsey12icterus9
6-letter words 25
citers8citrus8cruets8cruise8cruset8crusty11curets8curies8curite8curtsy11cutesy11cuteys11cuties8eructs8rectus8recuts8rictus8rustic8steric8suiter6surety9trices8truces8tuyers9uretic8
5-letter words 50
certs7cesti7cires7citer7cites7crest7cries7cruet7cruse7crust7cures7curet7curie7curse7curst7cuter7cutes7cutey10cutie7cutis7ecrus7eruct7etuis5ictus7recti7recut7resit5rices7rites5rusty8scute7sieur5sruti5sucre7suety8suite5tiers5tires5treys8trice7tries5truce7trues5tuyer8tyers8tyres8ureic7uteri5yetis8yurts8
4-letter words 61
cire6cist6cite6city9cris6crus6cues6cure6curs6curt6cute6cuts6cyst9ecru6ecus6erst4etic6etui4ices6ires4recs6reis4rest4rets4rice6rise4rite4rues4ruse4rust4ruts4ryes7scry9scut6sect6sice6sire4site4stey7stir4stye7suer4suet4suit4sure4syce9tics6tier4ties4tire4trey7true4tuis4tyer7tyes7tyre7uric6user4yest7yeti7yurt7
3-letter words 41
cis5cru5cry8cue5cur5cut5ecu5ers3ert3ice5icy8ire3its3rec5rei3res3ret3rue3rut3rye6sec5sei3ser3set3sic5sir3sit3sri3sty6sue3tic5tie3tis3try6tui3tye6use3uts3yer6yes6yet6
2-letter words 14
cs4er2es2et2is2it2re2rs2si2ti2ts2us2ut2ye5
Words are from our open word list and include some game-only words. Rude words are left out of this page; the unscrambler shows every valid word, lets you add blank tiles and filter by length.