Sista is valid Scrabble Word

Is sista a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is sista valid Words with Friends?
Words with Friends NO

Definitions for SISTA in dictionary:

Words related to SISTA

sistas6

Words that contain SISTA

sistas6 assistant9 resistant9 assistance12 assistants10 desistance13 resistance12 resistants10 assistances13 desistances14 resistances13 unresistant11 irresistance14 nonresistant12 irresistable14 irresistably17 assistantship18 irresistances15 nonresistance15 nonresistants13 assistantships19 nonresistances16 radioresistant15 irresistability20 magnetoresistan18 magnetoresistance22 magnetoresistances23
Find what other words can be done using letters: "sista"
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