Knackered is valid Scrabble Word

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

Definitions for KNACKERED in dictionary:

Similar words containing KNACKER without suffix ed

knacker17 knackers18 knackery21 knackeries20 knackering21
Find what other words can be done using letters: "knackered"
https://scrabble-word.com/finder/knackered
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