Antiknocks is valid Scrabble Word

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

10 letters word
20 points in Scrabble
23 points in WWF

Definitions for ANTIKNOCKS in dictionary:

NOUN:

ANTIKNOCK, an additive in petrol, used to prevent knock
such a substance added to fuel in an internal-combustion engine.

ADJECTIVE:

noting or pertaining to a substance, as tetraethyllead or ferrocene, used as a fuel additive for an internal-combustion engine to eliminate or minimize knock.

Words related to ANTIKNOCKS

antiknock19

Similar words containing KNOCK without suffix s and without prefix anti

knock15 knocks16 knocked18 knocker17 knockers18 knocking19 knockoff24 knockout18 antiknock19 doorknock20 knockback27 knockdown23 knockings20 knockless19 knockoffs25 knockouts19 doorknocks21 knockabout22 knockbacks28 knockdowns24 knockwurst23 doorknocked23 doorknocker22 knockabouts23 knockwursts24 doorknockers23 doorknocking24

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