The word is a valid scrabble word

3 short excerpts of WikWik.org (WikWik is an online database of words defined in the English, French, Spanish, Italian, and other Wiktionnaries.)

• sis  n. (informal) Clipping of sister.
• SIS  prop.n. (Britain) Initialism of Secret Intelligence Service.
• SIS  n. Initialism of second impact syndrome.

11 valid words from 3 definitions

CLIPPING IMPACT INFORMAL INITIALISM INTELLIGENCE OF SECOND SECRET SERVICE SISTER SYNDROME

1 invalid word from 3 definitions

BRITAIN

2 words-in-word (Words found as is inside the word.)

IS SI

3 words-in-word RTL (Words found written from right to left, inside the word.)

IS SI SIS

28 cousins (New words found by changing only one letter.)

AIS BIS CIS DIS GIS HIS KIS LIS MIS NIS PIS QIS SIB SIC SIF SIK SIM SIN SIP SIR SIT SIX SOS SUS TIS VIS WIS XIS

2 lipograms (New words found when removing only one letter.)

IS SI

13 epenthesis (New words found when adding only one letter.)

SAIS SEIS SIBS SICS SIES SIMS SINS SIPS SIRS SISS SITS SKIS SRIS

40 suffixes (New words found by adding one or more letters at the end of the word.)

SISS SIST SISAL SISES SISSY SISTS SISALS SISKIN SISSES SISSOO SISTED SISTER SISTRA SISKINS SISSIER SISSIES SISSOOS SISTERS SISTING SISTRUM SISERARY SISSIEST SISSYISH SISTERED SISTERLY SISTROID SISTRUMS SISSIFIED SISSINESS SISSYNESS SISTERING SISERARIES SISTERHOOD SISTERLESS SISTERLIKE SISSINESSES SISSYNESSES SISTERHOODS SISTERLINESS SISTERLINESSES

342 times in the middle (New words found by adding letters in front and at the end of the word.)

ASSIST DESIST INSIST RESIST ASSISTS BASSIST BOSSISM CONSIST DESISTS FALSISH FALSISM INSISTS MISSISH PERSIST RESISTS SENSISM SENSIST SUBSIST ASSISTED ASSISTER ASSISTOR BASSISTS BOSSISMS BRASSISH CASSISES CLASSISM CLASSIST COARSISH COASSIST CONSISTS CROSSISH DESISTED ECESISES ENOSISES FALSISMS GLOSSIST INSISTED INSISTER LOOKSISM MISSISES NOESISES PERSISTS RESISTED RESISTER RESISTOR SENSISMS SENSISTS SUBSISTS TUSSISES WHOSISES + 292 words

859 prefixes (New words found by adding one or more letters in front of the word.)

PSIS APSIS ARSIS BASIS LYSIS OASIS CASSIS CRASIS CRISIS CYESIS DIESIS ECESIS EMESIS ENOSIS GNOSIS LASSIS MIOSIS MISSIS MYASIS MYOSIS NKOSIS NOESIS PHASIS PHYSIS PTOSIS PYOSIS SENSIS SEPSIS STASIS THESIS TMESIS TUSSIS ULOSIS URESIS UROSIS WHOSIS ABIOSIS ALGESIS ANOESIS APHESIS ASCESIS ASEPSIS ASKESIS AUXESIS CHASSIS CLASSIS DALASIS DULOSIS ECDYSIS ECTASIS + 809 words

23 anagrams plus one (New words formed with all the letters from the word plus a letter.)

+A SAIS
+B SIBS
+C SICS
+D DISS
+E SEIS SIES
+H HISS
+K KISS SKIS
+M ISMS MISS SIMS
+N SINS
+O ISOS
+P PISS PSIS SIPS
+R SIRS SRIS
+S SISS
+T SIST SITS
+W WISS

2 anagrams minus one (New words formed with all the letters from the word minus a letter.)

-S IS SI

Scrabble scoring

• 3 points.

Probability in scrabble (Probability to draw 7 letters at the beginning of the game to build the word.)

• Joker allowed, 1 in 20.4 chance (4.91%).
• Joker not allowed, 1 in 85.6 chance (1.17%).

Other languages

• Valid: French Spanish

• Invalid: Italian

Category without words

• No anagrams (Word found by changing the order of the letters.)

Recommended websites

• New ! Visit WikWik.org - the word is in the WikWik, see all the details (16 definitions).
• www.BestWordList.com to create personalized word lists.
• www.BestWordClub.com to play duplicate online scrabble.
• Ortograf.ws to look for words.