Infectiousnesses is valid word

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

16 letters word
21 points in Scrabble
25 points in WWF

Definitions for INFECTIOUSNESSES in dictionary:

ADJECTIVE:

communicable by infection, as from one person to another or from one part of the body to another: infectious diseases.
causing or communicating infection.
tending to spread from one to another: infectious laughter.
capable of contaminating with illegality; exposing to seizure or forfeiture.
diseased.

Similar words containing FECTIOUSNESSE without suffix s and without prefix in

infectiousnesse20

Find what other words can be done using letters: "infectiousnesses"
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