What It Scores
SIBB is a valid word in the tournament list this site uses. Tile values only, before any premium square: 8 in Scrabble and 10 in Words With Friends. The letters break down as S1 I1 B3 B3.
Anagrams of SIBB (1)
Same letters, different order. Any of these plays the same tiles for the same score.
Words Made From The Letters In SIBB
6 shorter words come out of these tiles. On a board that matters more than the long play, because a short word on a premium square often beats a long one on plain squares.
3 letter words (3)
2 letter words (3)
Longer Words Containing SIBB
SIBB appears inside each of these, which is what makes it worth knowing as a hook.
Next: the Word Unscrambler for any letters at all. Full entry and definition at Merriam-Webster.