SI — Is SI a Scrabble Word?
SI is a two-letter word. This page checks dictionary validity and scores for Scrabble US/Canada and Words With Friends.
Word game validity
Scores are base tile values, before board multipliers. This is a word-game validity check, not a general dictionary definition.
Score breakdown
S = 1 + I = 1 = 2 points in Scrabble. SI is a common English word. On a triple-word square it is worth 6 points; in Words With Friends it scores 2 base points.
Hooks: add one letter to SI
Hooks let you play a word alongside SI and score both. SI takes 1 front hook and 9 back hooks.
Front hooks (letter + SI)
- PSI5
Back hooks (SI + letter)
- SIB5
- SIC5
- SIM5
- SIN3
- SIP5
- SIR3
- SIS3
- SIT3
- SIX10
Reversed, SI becomes IS, which is also valid.
3 letter words containing SI (10)
- SIX10
- SIR3
- SIT3
- SIN3
- SIM5
- SIP5
- SIS3
- SIC5
- PSI5
- SIB5
4 letter words starting with SI (35)
- SIDE5
- SITE4
- SIZE13
- SIGN5
- SICK10
- SING5
- SINK8
- SITS4
- SILK8
- SINS4
- SIGH8
- SIMS6
- SIRE4
- SINE4
- SIFT7
- SILO4
- SILL4
- SIPS6
- SITH7
- SILT4
- SIRS4
- SIMA6
- SIAL4
- SIBB8
- SIBS6
- SICE6
- SICS6
- SIDH8
- SIKA8
- SIKE8
- SILD5
- SIMP8
- SINH7
- SIPE6
- SIZY16
5 letter words starting with SI (71)
- SINCE7
- SITES5
- SIDES6
- SIGNS6
- SIGHT9
- SILLY8
- SIXTH15
- SIZED15
- SIZES14
- SIDED7
- SIEGE6
- SIXTY15
- SINGS6
- SILVA8
- SIGMA8
- SINKS9
- SIREN5
- SIGHS9
- SINUS5
- SILKY12
- SISSY8
- SIEVE8
- SILOS5
- SIXES12
- SILKS9
- SILLS5
- SITED6
- SIRED6
- SICKO11
- SIRES5
- SIALS5
- SIBBS9
- SIBYL10
- SICES7
- SICKS11
- SIDHE9
- SIDLE6
- SIEUR5
- SIFTS8
- SIGIL6
About this word check
Two-letter words like SI are the glue of Scrabble: they let you play parallel to other words and score in two directions. Learn its hooks above, then compare it with the other two-letter words. Use the 2 letter words list to compare related words, or the word finder to search your rack.
Frequently asked questions
Is SI a Scrabble word?
Yes. SI is valid in TWL06 and scores 2 points.
Is SI valid in Words With Friends?
Yes. SI is in the ENABLE word list and scores 2 WWF points.
How many points is SI?
It scores 2 points in Scrabble and 2 points in Words With Friends.
Is SI a two-letter word?
Yes. SI has two letters.
What words can you make by adding a letter to SI?
Front hooks: PSI. Back hooks: SIB, SIC, SIM, SIN, SIP, SIR, SIS, SIT, SIX.
How is SI scored?
S = 1 + I = 1 = 2 points in Scrabble, before premium squares.