Sed is valid Scrabble Word

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

Definitions for SED in dictionary:

Words related to SED

said5 say6

How to use SED in a sentence

Find what other words can be done using letters: "sed"
https://scrabble-word.com/finder/sed
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