Antihijacking is valid Scrabble Word

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

Definitions for ANTIHIJACKING in dictionary:

Similar words containing HIJACK without suffix ing and without prefix anti

hijack22 hijacks23 hijacked25 hijacker24 hijackers25 hijacking26 antihijack26 hijackings27
Find what other words can be done using letters: "antihijacking"
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