Haikai is valid Scrabble Word

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

Definitions for HAIKAI in dictionary:

Words related to HAIKAI

haikai13 haiku12
Find what other words can be done using letters: "haikai"
https://scrabble-word.com/finder/haikai
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