Sum is valid Scrabble Word

Is sum a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is sum valid Words with Friends?
Words with Friends YES

Definitions for SUM in dictionary:

Words related to SUM

summable14 summed11 summing12 summings13 sums6 sumy9

How to use SUM in a sentence

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